Mail domain report: td00.de

SPF

pass

SPF record published

Found

Record: v=spf1 mx a:tickets.td00.de a:lists.td00.de a:pain.td00.de ip4:116.203.69.194 ip6:2a01:4f8:1c1c:cfba:beef:beef:beef:beef ~all
DNS lookups: 4 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

No ptr mechanism found in SPF record.
✓ 4 of 10 DNS lookups #2

SPF record needs 4 DNS lookups (limit is 10).
✓ Ends with ~all #3

SPF record properly uses ~all to restrict unauthorized senders.
✓ Record published #6

SPF record exists for this domain.
✓ Single record #16

Exactly one SPF record is published.
✓ Valid syntax #25

All SPF mechanisms and modifiers are valid.
✓ No void lookups #26

All include/redirect targets exist.
✓ No overly broad IP ranges #27

All ip4/ip6 ranges are narrow enough.

DMARC

warn

p=quarantine (_dmarc.td00.de)

Found

Record: v=DMARC1; p=quarantine; rua=mailto:td00.de@dmarc.tservic.es; ruf=mailto:td00.de@dmarc.tservic.es fo=1;
Found at: _dmarc.td00.de
External report address: mailto:td00.de@dmarc.tservic.es (not authorized)
External report address: mailto:td00.de@dmarc.tservic.es fo=1 (could not be checked)

Tag	Value	Meaning
v	DMARC1	Version
p	quarantine	Policy
rua	mailto:td00.de@dmarc.tservic.es	Aggregate report addresses
ruf	mailto:td00.de@dmarc.tservic.es fo=1	Failure report addresses

Checks

!

Policy: quarantine

DMARC policy is set to 'quarantine'. Consider upgrading to 'reject' for stronger protection once you've verified legitimate emails are passing authentication.

#4
✓ Record published #5

DMARC record exists for this domain.
✓ Valid syntax #17

DMARC record syntax is valid.
✓ Applies to 100% of mail #18

DMARC policy applies to all failing mail.
✓ Aggregate reports enabled #19

Aggregate reports are sent to: mailto:td00.de@dmarc.tservic.es
✓ Subdomain policy: quarantine #20

Subdomains are covered by policy 'quarantine'.
!

Report address not authorized

These report addresses are in another domain that has not agreed to receive your reports, so receivers will not send them: mailto:td00.de@dmarc.tservic.es (needs td00.de._report._dmarc.dmarc.tservic.es). Ask the report provider to publish the record, or check the address.

#29

DKIM

pass

Selectors: dkim

Found

Selectors: dkim
_domainkey: NOERROR

Selector	Key	Flags
dkim	RSA 2048 bits

Checks

✓ Keys found: dkim #7

DKIM keys found for this domain with selectors: dkim
✓ Strong keys #23

DKIM keys are strong enough: dkim: RSA 2048 bits.
✓ No problematic flags #24

No keys in test mode, revoked, or limited to SHA-1.

DNSSEC

warn

Not signed

Found

DNSKEY records: No (0)
DS at parent: No

Checks

!

Not enabled

DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.

#8

MX

warn

3 mail servers

Found

Priority	Host	Records	Reverse DNS
10	pain.td00.de	A 116.203.69.194 AAAA 2a01:4f8:1c1c:cfba::1	pain.td00.de ✓ pain.td00.de ✓
20	no.pain.td00.de	A 95.216.195.158 AAAA 2a01:4f9:c010:e75b::1	static.158.195.216.95.clients.your-server.de ✓ no PTR
30	fallbackmx.thies.xyz	CNAME proxy.tservic.es A 94.130.22.150 AAAA 2a01:4f8:10b:1be9::2	proxy02.tservic.es ✓ proxy02.tservic.es ✓

Checks

✓ 3 MX records #9

Found 3 MX records for this domain.
✓ All hosts resolve #10

All MX records resolve to valid IP addresses.
✓ All hosts have IPv6 #11

All MX records resolve to IPv6 addresses.
✓ Redundant MX hosts #12

Found 3 MX records, which provides redundancy for email delivery.
✓ At most 5 MX records #13

Found 3 MX records, which is within the recommended range (1-5).
✓ No localhost targets #14

No MX records pointing to localhost found.
✓ No private IP addresses #15

No MX records resolving to private IP addresses found.
!

Hosts are CNAMEs

MX records must point to a host name with A/AAAA records, not to a CNAME: fallbackmx.thies.xyz -> proxy.tservic.es

#22
!

Addresses without reverse DNS

These MX addresses have no PTR record, which many receivers treat as a spam signal: 2a01:4f9:c010:e75b::1 (no.pain.td00.de). Ask your hosting provider to set one.

#30

TLS

fail

no MTA-STS · no TLS-RPT · DANE on 1 of 3 MX hosts

Found

DANE (TLSA records)

MX host	TLSA	DNSSEC
pain.td00.de	3 1 1 fcd3a927b7fc1033…	No
no.pain.td00.de	none	-
fallbackmx.thies.xyz	none	-

Checks

!

Not configured

MTA-STS is not configured, so other mail servers fall back to unencrypted delivery when TLS fails or is stripped by an attacker. Publish a _mta-sts TXT record and a policy at https://mta-sts.<domain>/.well-known/mta-sts.txt.

#32
!

Not configured

MTA-STS or DANE is used without TLS-RPT, so you get no reports when senders fail to deliver because of TLS problems. Publish _smtp._tls TXT "v=TLSRPTv1; rua=mailto:...".

#35
✗

TLSA records not DNSSEC-validated

These MX hosts publish TLSA records that the resolver could not validate with DNSSEC, so senders ignore them or, if validation fails, may refuse delivery: pain.td00.de.

#36

BIMI

info

No BIMI record

Checks

i

Not configured

BIMI shows your logo next to your mail in supporting mail clients. It requires DMARC enforcement.

#38