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Email assessment · methodology v4

Check email infrastructure

The score assesses DNS foundations, email authentication and mail transport only. Websites, HTTP headers, HTML basics and blocklists do not affect email score, rating, coverage or weekly ranking.

Enter only the domain, for example example.com — without https://, a path or an email address.

Each domain can be checked at most once every five minutes. Opening this page does not start a check; anonymous SMTP, mailbox and port scans are excluded. Completed public checks may appear temporarily in the weekly overview with the domain, rating and time. Verified owners can withdraw visibility.
Stored check results

firemail.de

firemail.de
AAA98/100
Coverage 100 %

Assessment profile
public-email-trust-v4
Requested (UTC)
04.11.2026 12:43:56
Earliest refresh (UTC)
04.11.2026 12:48:56

Email findings to review

Specific deviations and unresolved checks from this saved snapshot. Affected fields are shown directly with each finding.

Saved technical finding; details are available in the evidence.

Notice

Cross-check the authoritative DNS zone and affected records with a second resolver.

View finding and evidence dns.wildcard_detected

The DMARC record is valid and also requests forensic failure reports, which Sendequelle does not process.

Notice

Check whether ruf and fo are needed and whether the recipient handles these sensitive reports in accordance with privacy requirements.

View finding and evidence dmarc.failure_reporting_configured

No optional BIMI record is published.

Notice

Review the effective SPF, DMARC or BIMI record against the finding code and correct it in a controlled way.

View finding and evidence bimi.not_configured
Three email assessment categories

What was assessed?

Unavailable areas are explicitly identified and never treated as passed.

Open methodology

Domain and DNS

98/100

Nameservers, records, DNSSEC and basic DNS configuration.

Coverage100 % · 2 checks
1 passed1 review0 unresolved

Email authentication

97/100

SPF, DMARC and publicly verifiable sender rules.

Coverage100 % · 3 checks
1 passed2 review0 unresolved

Mail servers and transport

100/100

MX and TLS reporting policies without anonymous port scans.

Coverage100 % · 3 checks
3 passed0 review0 unresolved
Email infrastructure in detail

Which systems receive mail — and which may send it?

Receiving MX servers and outgoing senders are identified separately from the stored DNS evidence.

Mail routes published in DNS

Inbound and outbound mail, shown separately

MX shows where incoming messages go. SPF shows which networks may send for the domain.

Public DNS evidence
Incoming mail

MX targets

mx1.firemail.de Priority 10
IP targets
178.63.251.174
Outgoing mail

SPF-authorized sources

v=spf1 mx a:mail.firemail.de a:firemail.at a:firemail.eu ip4:188.40.70.221 ip4:188.40.70.237 a:firemail.de a:mail.emailn.de ip4:46.182.18.10 ip4:88.99.254.36 -all
MXDefault domain target
Published by firemail.de

SPF authorizes the public addresses of the MX targets.

Amail.firemail.de
Published by firemail.de

SPF authorizes the public A/AAAA addresses of the named host.

Afiremail.at
Published by firemail.de

SPF authorizes the public A/AAAA addresses of the named host.

Afiremail.eu
Published by firemail.de

SPF authorizes the public A/AAAA addresses of the named host.

IP4188.40.70.221
Published by firemail.de

This IPv4 address or network is explicitly authorized as a sender by SPF.

IP4188.40.70.237
Published by firemail.de

This IPv4 address or network is explicitly authorized as a sender by SPF.

Afiremail.de
Published by firemail.de

SPF authorizes the public A/AAAA addresses of the named host.

Amail.emailn.de
Published by firemail.de

SPF authorizes the public A/AAAA addresses of the named host.

IP446.182.18.10
Published by firemail.de

This IPv4 address or network is explicitly authorized as a sender by SPF.

IP488.99.254.36
Published by firemail.de

This IPv4 address or network is explicitly authorized as a sender by SPF.

Resolved sending endpoints and hostnames

For each individual public sending IP, its PTR name is resolved and forward-checked against the same IP.

178.63.251.174FCrDNS confirmed
SPF origin
firemail.de · MX-ADDRESS
PTR names and hostnames
emg.emailn.de
Confirmed: emg.emailn.de
188.40.70.221FCrDNS confirmed
SPF origin
firemail.de · IP4firemail.de · Afiremail.de · Afiremail.de · Afiremail.de · A
PTR names and hostnames
mail.firemail.de
Confirmed: mail.firemail.de
188.40.70.237FCrDNS confirmed
SPF origin
firemail.de · IP4
PTR names and hostnames
send.firemail.de
Confirmed: send.firemail.de
46.182.18.10FCrDNS confirmed
SPF origin
firemail.de · IP4
PTR names and hostnames
pmg2.emailn.de
Confirmed: pmg2.emailn.de
46.182.21.2FCrDNS confirmed
SPF origin
firemail.de · A
PTR names and hostnames
mail.emailn.de
Confirmed: mail.emailn.de
88.99.254.36FCrDNS confirmed
SPF origin
firemail.de · IP4
PTR names and hostnames
relay.emailn.de
Confirmed: relay.emailn.de
MX targets describe inbound mail. SPF describes authorized sending sources. A hostname such as mail.example.org is identified as an outbound server only when stored DNS, SPF or monitoring evidence establishes that role.
Email authentication in detail

DMARC record explained in full

The record, protection, tag values, effective defaults and external report authorisation from this check.

DMARC record found

DNS query: _dmarc.firemail.de
DMARC-compliant with a notice
DMARC-compliant with a notice. The record is usable. Review the notices explained below. Effective policy: p=reject
v=DMARC1; p=reject; rua=mailto:d-yt1nwktoquklrgdn5sdvisuyg5xrwgon@reports.sendequelle.com; ruf=mailto:postmaster@firemail.de; sp=reject; adkim=r; aspf=r

Protection

What protection does this record provide?

Compliance, policy effect, reporting and alignment are assessed separately.

Record and syntax

Valid and unique

Version, order, separators and values were read as an applicable DMARC record.

Protection for the domain

Reject (p=reject) – highest protection

Messages that fail alignment should be rejected.

Protection for subdomains

Reject (p=reject) – highest protection

Messages that fail alignment should be rejected.

Aggregate reports

Configured and authorized

At least one rua recipient is configured; external destinations were checked using the required DNS authorization.

DKIM alignment

Relaxed

The same organizational domain is sufficient. This complies with DMARC and is the standardized default.

SPF alignment

Relaxed

The same organizational domain is sufficient. This complies with DMARC and is the standardized default.

What do the individual settings mean?

Every explicit tag and default value is explained with its source, assessment and effect.

TagValueAssessmentMeaning
vProtocol version DMARC1Set in the record Valid Correct DMARC version; must appear first.
pDomain policy rejectSet in the record Valid Messages that fail alignment should be rejected.
ruaAggregate report recipients mailto:d-yt1nwktoquklrgdn5sdvisuyg5xrwgon@reports.sendequelle.comSet in the record Valid Recipients send aggregate DMARC reports to these destinations.
rufFailure report recipients mailto:postmaster@firemail.deSet in the record Valid Forensic failure reports may be sent to these destinations; Sendequelle does not process them in the MVP.
spSubdomain policy rejectSet in the record Valid Separate policy for subdomains.
adkimDKIM alignment rSet in the record Valid Relaxed DKIM alignment: the same organizational domain is sufficient.
aspfSPF alignment rSet in the record Valid Relaxed SPF alignment: the same organizational domain is sufficient.

Report recipient authorization

mailto:d-yt1nwktoquklrgdn5sdvisuyg5xrwgon@reports.sendequelle.com Externally authorized
From the result to the cause

Email findings and evidence

Each finding shows its assessment, impact, recommended action and the stored values on which it is based.

Domain and DNS

Saved technical finding; details are available in the evidence.

dns.wildcard_detected
Notice
Why does this matter?

DNS deviations can affect availability and the reliability of dependent services.

Next useful step

Cross-check the authoritative DNS zone and affected records with a second resolver.

How this finding was determined (12 saved facts)
Saved evidence for Saved technical finding; details are available in the evidence.
Section Property Observed value
Check runChecker version1.0.0
Check runCheck duration219 ms
ObservedDomainfiremail.de
ObservedWildcard detectedYes
ObservedQuery name hash82c450cab904227972a7255684772a158a69efd44b42e5417fc81084258b73c3
ObservedAddresses188.40.70.221
ObservedLowest TTL86.400 seconds (24 hours)
ObservedQuery name hash9291a36d5ac4a7adfb7d83a93a6eff7ac1cb122672a8bcb0737907472f4be5ef
ObservedAddresses188.40.70.221
ObservedLowest TTL86.400 seconds (24 hours)
ExpectedWildcard detectedNo
Technical evidenceProbe count2
Email authentication

The DMARC record is valid and also requests forensic failure reports, which Sendequelle does not process.

dmarc.failure_reporting_configured
Notice
Why does this matter?

ruf/fo may trigger additional sensitive reports about individual messages. Sendequelle does not receive or analyze these reports in the MVP.

Next useful step

Check whether ruf and fo are needed and whether the recipient handles these sensitive reports in accordance with privacy requirements.

How this finding was determined (32 saved facts)
Saved evidence for The DMARC record is valid and also requests forensic failure reports, which Sendequelle does not process.
Section Property Observed value
Check runChecker version1.0.0
Check runCheck duration1397 ms
ObservedDomainfiremail.de
ObservedDNS lookup location_dmarc.firemail.de
ObservedPolicy domainfiremail.de
ObservedOrganizational domainfiremail.de
ObservedDiscoverydirect
ObservedRawv=DMARC1; p=reject; rua=mailto:d-yt1nwktoquklrgdn5sdvisuyg5xrwgon@reports.sendequelle.com; ruf=mailto:postmaster@firemail.de; sp=reject; adkim=r; aspf=r
ObservedVDMARC1
ObservedPreject
ObservedRuamailto:d-yt1nwktoquklrgdn5sdvisuyg5xrwgon@reports.sendequelle.com
ObservedRufmailto:postmaster@firemail.de
ObservedSpreject
ObservedAdkimr
ObservedAspfr
ObservedAggregate urismailto:d-yt1nwktoquklrgdn5sdvisuyg5xrwgon@reports.sendequelle.com
ObservedFailure urismailto:postmaster@firemail.de
ObservedEffective policyreject
ObservedPolicy fallbackNo
ObservedFingerprint9c33a3870684ddf59a4ec1b039260abfb2b51413bb93bea91bc23fc315ce6bba
ObservedApplied policyreject
ObservedUrimailto:d-yt1nwktoquklrgdn5sdvisuyg5xrwgon@reports.sendequelle.com
ObservedDestination hostreports.sendequelle.com
ObservedExternalYes
ObservedStatusauthorized
ObservedDNS lookup locationfiremail.de._report._dmarc.reports.sendequelle.com
ObservedLowest TTL300 seconds
ObservedLowest TTL300 seconds
ObservedStatusinfo
ObservedCodedmarc.failure_reporting_configured
ObservedDomainfiremail.de
ObservedIngestionNo
Email authentication

No optional BIMI record is published.

bimi.not_configured
Notice
Why does this matter?

Incomplete policies can affect spoofing protection, report reception or deliverability.

Next useful step

Review the effective SPF, DMARC or BIMI record against the finding code and correct it in a controlled way.

How this finding was determined (32 saved facts)
Saved evidence for No optional BIMI record is published.
Section Property Observed value
Check runChecker version2.0.0
Check runCheck duration247 ms
ObservedDomainfiremail.de
ObservedSelectordefault
ObservedDNS lookup locationdefault._bimi.firemail.de
ObservedNumber of records found0
ObservedDNSSEC statussecure
ObservedLowest TTL21.600 seconds (6 hours)
ExpectedOptionalYes
ExpectedSelectordefault
ExpectedHttps logoYes
Technical evidenceAdapterApp\Domain\Monitoring\Dns\Consensus\DigTxtResolver
Technical evidenceDNS lookup locationdefault._bimi.firemail.de
Technical evidenceMinimum agreement2
Technical evidenceNamegoogle
Technical evidenceServer8.8.8.8
Technical evidenceTransporttls
Technical evidenceTls hostnamedns.google
Technical evidenceStatussecure
Technical evidenceReasonauthenticated_data
Technical evidenceExit code0
Technical evidenceTimed outNo
Technical evidenceResponse statusNOERROR
Technical evidenceAuthenticated dataYes
Technical evidenceFlagsqr, rd, ra, ad
Technical evidenceCheck duration105
Technical evidenceNumber of records found1
Technical evidenceRecord fingerprint4c8497c3defc666e4ae0d736de86680046bbdfa83b2cb5f5ff5565aa0641922e
Technical evidenceLowest TTL21.600 seconds (6 hours)
Technical evidenceNamecloudflare
Technical evidenceServer1.1.1.1
Technical evidenceTransporttls
Domain and DNS

DNS and MX infrastructure is consistent

dns.infrastructure_ok
Passed
Why does this matter?

Nameservers, SOA, MX targets and DNSSEC were evaluated without a higher-priority error.

Next useful step

Keep the configuration and monitor changes.

How this finding was determined (32 saved facts)
Saved evidence for DNS and MX infrastructure is consistent
Section Property Observed value
Check runChecker version3.0.0
Check runCheck duration480 ms
ObservedResolver usedsystem-recursive
ObservedNameserversns1.nbiserv.de, ns2.nbiserv.de, ns3.nbiserv.de, ns4.nbiserv.de
ObservedMnamens.nbiserv.de
ObservedRnamehostmaster.nbiserv.de
ObservedSerial2026050836
ObservedRefresh86400
ObservedRetry7200
ObservedExpire2419200
ObservedMinimum ttl7200
ObservedPriority10
ObservedTargetmx1.firemail.de
ObservedDomain addresses188.40.70.221
ObservedAddresses178.63.251.174
ObservedStatussecure
ObservedReasonresolver_consensus_secure
ExpectedNameserversat_least_two
ExpectedSoapresent
ExpectedMxvalid_or_null_mx
ExpectedMx addressespublic_only
ExpectedDnssecsecure_or_explicitly_insecure
Technical evidenceAdapterApp\Domain\Monitoring\Dns\Dnssec\DigDnssecValidator
Technical evidenceDomainfiremail.de
Technical evidenceMinimum agreement2
Technical evidenceNamegoogle
Technical evidenceServer8.8.8.8
Technical evidenceTransporttls
Technical evidenceTls hostnamedns.google
Technical evidenceStatussecure
Technical evidenceReasonauthenticated_data
Technical evidenceExit code0
Email authentication

SPF policy is consistent

spf.policy_valid
Passed
Why does this matter?

The record and its statically resolvable dependencies are within the evaluated limits.

Next useful step

Continue monitoring changes to sending services and includes.

How this finding was determined (32 saved facts)
Saved evidence for SPF policy is consistent
Section Property Observed value
Check runChecker version3.0.0
Check runCheck duration369 ms
ObservedDomainfiremail.de
ObservedRawv=spf1 mx a:mail.firemail.de a:firemail.at a:firemail.eu ip4:188.40.70.221 ip4:188.40.70.237 a:firemail.de a:mail.emailn.de ip4:46.182.18.10 ip4:88.99.254.36 -all
ObservedQualifier+
ObservedNamemx
ObservedQualifier+
ObservedNamea
ObservedArgumentmail.firemail.de
ObservedQualifier+
ObservedNamea
ObservedArgumentfiremail.at
ObservedQualifier+
ObservedNamea
ObservedArgumentfiremail.eu
ObservedQualifier+
ObservedNameip4
ObservedArgument188.40.70.221
ObservedQualifier+
ObservedNameip4
ObservedArgument188.40.70.237
ObservedQualifier+
ObservedNamea
ObservedArgumentfiremail.de
ObservedQualifier+
ObservedNamea
ObservedArgumentmail.emailn.de
ObservedQualifier+
ObservedNameip4
ObservedArgument46.182.18.10
ObservedQualifier+
ObservedNameip4
Mail servers and transport

MTA-STS policy is consistent

mta.policy_valid
Passed
Why does this matter?

The TXT announcement, HTTPS policy and MX coverage were evaluated successfully.

Next useful step

Monitor the policy ID and certificates when making changes.

How this finding was determined (32 saved facts)
Saved evidence for MTA-STS policy is consistent
Section Property Observed value
Check runChecker version1.0.0
Check runCheck duration220 ms
ObservedDomainfiremail.de
ObservedDNS lookup location_mta-sts.firemail.de
ObservedPolicy hostmta-sts.firemail.de
ObservedVersionSTSv1
ObservedFingerprint4ba1aa680ac9c8289f135345368a623833511007559016847b88f4064c4e186e
ObservedVersionSTSv1
ObservedModetesting
ObservedMxfilter.emailn.de, mx1.firemail.de
ObservedMax age86400
ObservedBody sha2564f500b373930b27b661207e494bf002c0e2692847fcb80cc4c5b9ecb4af5a0eb
ObservedMx hostsmx1.firemail.de
ExpectedPolicy requiredNo
ExpectedUrlhttps://mta-sts.firemail.de/.well-known/mta-sts.txt
ExpectedRedirects0
ExpectedHttps port443
ExpectedMax bytes65536
Technical evidenceAdapterApp\Domain\Monitoring\MtaSts\NativeMtaStsDnsResolver
Technical evidenceResolver usedsystem-recursive
Technical evidenceDNS lookup location_mta-sts.firemail.de
Technical evidenceTxt record count1
Technical evidenceMx hostsmx1.firemail.de
Technical evidenceAdapterApp\Domain\Monitoring\MtaSts\PinnedMtaStsPolicyFetcher
Technical evidencePolicy hostmta-sts.firemail.de
Technical evidencePath/.well-known/mta-sts.txt
Technical evidenceResolved addresses188.40.70.221
Technical evidenceSelected address188.40.70.221
Technical evidenceIp familyipv4
Technical evidenceFinal HTTP status200
Technical evidenceContent typetext/plain
Technical evidenceResponse bytes88
Mail servers and transport

TLS-RPT policy is consistent

tlsrpt.policy_valid
Passed
Why does this matter?

The record and reporting destinations were evaluated syntactically and semantically.

Next useful step

Monitor incoming reports and policy changes.

How this finding was determined (32 saved facts)
Saved evidence for TLS-RPT policy is consistent
Section Property Observed value
Check runChecker version2.0.0
Check runCheck duration226 ms
ObservedDomainfiremail.de
ObservedDNS lookup location_smtp._tls.firemail.de
ObservedNumber of records found1
ObservedRawv=TLSRPTv1; rua=mailto:postmaster@firemail.de
ObservedVTLSRPTv1
ObservedRuamailto:postmaster@firemail.de
ObservedAggregate urismailto:postmaster@firemail.de
ObservedFingerprint573fdca8b7e532e41c9684a56a481f7ef316cb294673a5cfbf781bd4ce39fe5f
ObservedLowest TTL3.600 seconds (1 hours)
ObservedDNSSEC statussecure
ExpectedNumber of records found1
ExpectedPolicy requiredNo
Technical evidenceAdapterApp\Domain\Monitoring\Dns\Consensus\DigTxtResolver
Technical evidenceDNS lookup location_smtp._tls.firemail.de
Technical evidenceMinimum agreement2
Technical evidenceNamegoogle
Technical evidenceServer8.8.8.8
Technical evidenceTransporttls
Technical evidenceTls hostnamedns.google
Technical evidenceStatussecure
Technical evidenceReasonauthenticated_data
Technical evidenceExit code0
Technical evidenceTimed outNo
Technical evidenceResponse statusNOERROR
Technical evidenceAuthenticated dataYes
Technical evidenceFlagsqr, rd, ra, ad
Technical evidenceCheck duration91
Technical evidenceNumber of records found1
Technical evidenceRecord fingerprint199545f4fd3fb43fc0203f53707a8312cca225b96c3c11317d46b6622f0bdd78
Technical evidenceLowest TTL3.600 seconds (1 hours)
Mail servers and transport

The MX RRset and the SMTP TLSA policies of every MX host are DNSSEC validated. No certificate matching was performed by this public check.

public.dane_policy_published
Passed
Why does this matter?

The public check assesses DNSSEC and published TLSA policies at all MX targets. It does not match the current SMTP certificate.

Next useful step

Continue monitoring TLSA and certificate changes for your verified domain.

How this finding was determined (32 saved facts)
Saved evidence for The MX RRset and the SMTP TLSA policies of every MX host are DNSSEC validated. No certificate matching was performed by this public check.
Section Property Observed value
Check runChecker version1.0.0
Check runCheck duration395 ms
ObservedDomainfiremail.de
ObservedDNS lookup locationfiremail.de
ObservedMx hostsmx1.firemail.de
ObservedMx dnssec statussecure
ObservedHostnamemx1.firemail.de
ObservedDNS lookup location_25._tcp.mx1.firemail.de
ObservedDNSSEC statussecure
ObservedStatepublished
ObservedUsage3
ObservedSelector1
ObservedMatching type1
ObservedAssociation sha256166608d46c59da16146ddd32383a886a074619ebd62a4f3cb019d046b392161f
ObservedRecord fingerprint5244f514fd34d2bcf5bbfb01b05a11e95d18ac707810319b059bcbd4367b745a
ObservedRecord found3 1 1 22c340df62685ea3ba6c00d1b8750e1d4d6590f01fc946c3664da1618e6d85e9
ObservedSmtp usableYes
ObservedLowest TTL1.876 seconds
ObservedReasonresolver_consensus_secure
ObservedPolicy statepublished
ExpectedMx dnssecsecure
ExpectedTlsa dnssecsecure
ExpectedSmtp port25
ExpectedTlsa coverageall_mx
ExpectedCertificate matchauthorised_monitor_only
Technical evidencePerformedNo
Technical evidenceReasonanonymous_public_tool_boundary
Technical evidenceCertificate matchnot_checked
Technical evidenceQuery typeMX
Technical evidenceMinimum agreement2
Technical evidenceNamegoogle
Technical evidenceServer8.8.8.8

Supplementary information with no effect on the email assessment

Website, HTTP security headers, HTML basics and blocklists are shown separately. Their local warnings are not email score deductions.

Web security headers

Basic web security headers are missing or not unambiguously effective.

public.headers_incomplete
Improvement recommended

Supplementary finding · no score effect

Specifically affected
  • Missing or not effective: Content-Security-Policy
  • Missing or not effective: Content-Security-Policy: frame-ancestors / X-Frame-Options
  • Missing or not effective: Referrer-Policy
  • Missing or not effective: Permissions-Policy
Why does this matter?

Missing browser protection directives increase the website attack surface.

Next useful step

Add missing headers on the server; validate CSP in report-only mode first.

How this finding was determined (5 saved facts)
Saved evidence for Basic web security headers are missing or not unambiguously effective.
Section Property Observed value
Specifically affectedMissing or not effectiveContent-Security-Policy
Specifically affectedMissing or not effectiveContent-Security-Policy: frame-ancestors / X-Frame-Options
Specifically affectedMissing or not effectiveReferrer-Policy
Specifically affectedMissing or not effectivePermissions-Policy
Check runChecker version2.0.0
Technical evidenceAnalyzed destination pagehttps://firemail.de/
Technical evidencePresenthsts, nosniff
Technical evidenceMissingcsp, frame_protection, referrer_policy, permissions_policy
Technical evidenceChecked properties6
HTML basics

Some automatically checked HTML basics are missing.

public.accessibility_basics_incomplete
Notice

Supplementary finding · no score effect

Why does this matter?

Missing HTML basics can reduce usability and machine readability.

Next useful step

Add the document language, title, viewport, a clear H1 and a main landmark.

How this finding was determined (6 saved facts)
Saved evidence for Some automatically checked HTML basics are missing.
Section Property Observed value
Check runChecker version2.0.0
Technical evidenceAnalyzed destination pagehttps://firemail.de/
Technical evidencePresentlanguage, title, viewport, single_h1
Technical evidenceMissingmain_landmark
Technical evidenceChecked properties5
Technical evidenceComplete WCAG auditNo
Blocklists and reputation

The blocklist provider did not return a reliable assessment.

public.reputation_unavailable
Not assessed

Supplementary finding · no score effect

Why does this matter?

No blocklist or reputation rating is claimed without reliable provider evidence.

Next useful step

The operator should check provider configuration and availability before repeating this assessment.

How this finding was determined (32 saved facts)
Saved evidence for The blocklist provider did not return a reliable assessment.
Section Property Observed value
Check runChecker version3.0.0
ObservedIP address178.63.251.174
ObservedIp familyipv4
ObservedReputation providermulti-provider
ObservedProvider statusunavailable
ObservedCompleteNo
ObservedChecked at2026-11-04T12:44:04+00:00
ObservedChecked lists0
ObservedLists with a match0
ObservedUnavailable lists5
ObservedPolicy advisories0
ObservedKeyspamhaus_zen
ObservedNameSpamhaus ZEN
ObservedStatusunavailable
ObservedCategoryunknown
ObservedChecked at2026-11-04T12:44:04+00:00
ObservedSourcehttps://www.spamhaus.org/blocklists/zen-blocklist/
ObservedDelisting urlhttps://check.spamhaus.org/
ObservedReason codeprovider_disabled
ObservedKeyabusix_guardian
ObservedNameAbusix Guardian
ObservedStatusunavailable
ObservedCategoryunknown
ObservedChecked at2026-11-04T12:44:04+00:00
ObservedSourcehttps://abusix.com/guardian/
ObservedDelisting urlhttps://lookup.abusix.com/
ObservedReason codeprovider_disabled
ObservedKeyspamcop
ObservedNameSpamCop Blocking List
ObservedStatusunavailable
ObservedCategoryunknown
ObservedChecked at2026-11-04T12:44:04+00:00
Website and TLS

The HTTPS connection was successfully verified.

public.https_verified
Passed

Supplementary finding · no score effect

Why does this matter?

This check did not identify a specific deficiency.

Next useful step

Keep the configuration and check it again regularly.

How this finding was determined (13 saved facts)
Saved evidence for The HTTPS connection was successfully verified.
Section Property Observed value
Check runChecker version2.0.0
Technical evidenceRequested URLhttps://firemail.de/
Technical evidenceFinal URLhttps://firemail.de/
Technical evidenceValidated destination hostfiremail.de
Technical evidenceFinal HTTP status200
Technical evidenceIp familyipv4
Technical evidenceCertificate and hostname verifiedYes
Technical evidenceTLS protocolTLSv1.3
Technical evidenceTLS cipherTLS_AES_256_GCM_SHA384
Technical evidenceCertificate valid until2026-12-23T21:55:01+00:00
Technical evidenceCertificate time remaining49
Technical evidenceCheck duration55
Technical evidenceSafely followed redirects0
Website connection in detail

Understand the HTTPS and TLS assessment

Final status, certificate verification, negotiated connection and every safely followed redirect from this snapshot.

Measured HTTPS connection

TLS, certificate and redirect destination

Every displayed assessment is based on this saved check.

Safe external check
Final HTTPS status
HTTP 200

The safely followed destination was reachable.

Certificate and hostname
Verified

The certificate chain and hostname binding were accepted for this specific HTTPS connection.

Negotiated protocol
TLSv1.3

Measured on the final HTTPS connection; this does not describe every supported protocol.

Negotiated cipher suite
TLS_AES_256_GCM_SHA384

This is the cipher suite of this connection, not a complete cipher suite scan.

Certificate time remaining
49 days

Recorded expiry: 2026-12-23T21:55:01+00:00

Redirect chain
0 redirects

The requested HTTPS address was the final destination without a redirect.

Safely followed path
https://firemail.de/
Scope limit: The assessment covers the safely resolved, IP-pinned HTTPS connection to the final home page. It is not a complete test of all cipher suites, key types, TLS versions, PQC methods or other ports.
Blocklists and IP reputation

Which mail IP was checked against which lists?

Inbound MX addresses and publicly discoverable SPF sender addresses are shown separately. DKIM does not identify sending IPs; private DMARC sources are not used in this public check.

Partially evaluated
6 Mail IP addresses
0 Selected lists
0 Confirmed hits
30 Unavailable
178.63.251.174 MX mx1.firemail.deSPF-autorisierte Sender-IP multi-provider Incomplete
Blocklist results for 178.63.251.174
Data sourceClassificationResultCheck detailsActions
Abusix Guardian Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Abusix Guardian in a new window Appeal / delisting Open Abusix Guardian in a new window
Barracuda Reputation Block List Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Barracuda Reputation Block List in a new window Appeal / delisting Open Barracuda Reputation Block List in a new window
SpamCop Blocking List Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open SpamCop Blocking List in a new window Appeal / delisting Open SpamCop Blocking List in a new window
SpamRATS Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open SpamRATS in a new window Appeal / delisting Open SpamRATS in a new window
Spamhaus ZEN Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Spamhaus ZEN in a new window Appeal / delisting Open Spamhaus ZEN in a new window
188.40.70.221 SPF-autorisierte Sender-IP multi-provider Incomplete
Blocklist results for 188.40.70.221
Data sourceClassificationResultCheck detailsActions
Abusix Guardian Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Abusix Guardian in a new window Appeal / delisting Open Abusix Guardian in a new window
Barracuda Reputation Block List Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Barracuda Reputation Block List in a new window Appeal / delisting Open Barracuda Reputation Block List in a new window
SpamCop Blocking List Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open SpamCop Blocking List in a new window Appeal / delisting Open SpamCop Blocking List in a new window
SpamRATS Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open SpamRATS in a new window Appeal / delisting Open SpamRATS in a new window
Spamhaus ZEN Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Spamhaus ZEN in a new window Appeal / delisting Open Spamhaus ZEN in a new window
188.40.70.237 SPF-autorisierte Sender-IP multi-provider Incomplete
Blocklist results for 188.40.70.237
Data sourceClassificationResultCheck detailsActions
Abusix Guardian Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Abusix Guardian in a new window Appeal / delisting Open Abusix Guardian in a new window
Barracuda Reputation Block List Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Barracuda Reputation Block List in a new window Appeal / delisting Open Barracuda Reputation Block List in a new window
SpamCop Blocking List Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open SpamCop Blocking List in a new window Appeal / delisting Open SpamCop Blocking List in a new window
SpamRATS Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open SpamRATS in a new window Appeal / delisting Open SpamRATS in a new window
Spamhaus ZEN Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Spamhaus ZEN in a new window Appeal / delisting Open Spamhaus ZEN in a new window
46.182.18.10 SPF-autorisierte Sender-IP multi-provider Incomplete
Blocklist results for 46.182.18.10
Data sourceClassificationResultCheck detailsActions
Abusix Guardian Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Abusix Guardian in a new window Appeal / delisting Open Abusix Guardian in a new window
Barracuda Reputation Block List Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Barracuda Reputation Block List in a new window Appeal / delisting Open Barracuda Reputation Block List in a new window
SpamCop Blocking List Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open SpamCop Blocking List in a new window Appeal / delisting Open SpamCop Blocking List in a new window
SpamRATS Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open SpamRATS in a new window Appeal / delisting Open SpamRATS in a new window
Spamhaus ZEN Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Spamhaus ZEN in a new window Appeal / delisting Open Spamhaus ZEN in a new window
46.182.21.2 SPF-autorisierte Sender-IP multi-provider Incomplete
Blocklist results for 46.182.21.2
Data sourceClassificationResultCheck detailsActions
Abusix Guardian Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Abusix Guardian in a new window Appeal / delisting Open Abusix Guardian in a new window
Barracuda Reputation Block List Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Barracuda Reputation Block List in a new window Appeal / delisting Open Barracuda Reputation Block List in a new window
SpamCop Blocking List Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open SpamCop Blocking List in a new window Appeal / delisting Open SpamCop Blocking List in a new window
SpamRATS Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open SpamRATS in a new window Appeal / delisting Open SpamRATS in a new window
Spamhaus ZEN Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Spamhaus ZEN in a new window Appeal / delisting Open Spamhaus ZEN in a new window
88.99.254.36 SPF-autorisierte Sender-IP multi-provider Incomplete
Blocklist results for 88.99.254.36
Data sourceClassificationResultCheck detailsActions
Abusix Guardian Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Abusix Guardian in a new window Appeal / delisting Open Abusix Guardian in a new window
Barracuda Reputation Block List Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Barracuda Reputation Block List in a new window Appeal / delisting Open Barracuda Reputation Block List in a new window
SpamCop Blocking List Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open SpamCop Blocking List in a new window Appeal / delisting Open SpamCop Blocking List in a new window
SpamRATS Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open SpamRATS in a new window Appeal / delisting Open SpamRATS in a new window
Spamhaus ZEN Technical data source Unavailable No approved data provider is available for this query. The operator must configure and approve the provider; retrying alone does not close this gap. Source Open Spamhaus ZEN in a new window Appeal / delisting Open Spamhaus ZEN in a new window
Scope limit: The result applies only to the named data sources at the displayed check time. It is not a delivery guarantee or proof for or against spam activity.

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