Mail domain report: hs-coburg.de

SPF

pass

SPF record published

Found

Record: v=spf1 a mx a:bvbvxmail.bib-bvb.de include:_spf.o294.mx.srv.dfn.de include:spf.protection.outlook.com ip4:131.188.11.0/24 ip4:192.129.27.0/24 ip6:2001:638:a000:1025:: ~all
DNS lookups: 5 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

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

SPF record needs 5 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

fail

p=none (_dmarc.hs-coburg.de)

Found

Record: v=DMARC1; p=none;
Found at: _dmarc.hs-coburg.de

Tag	Value	Meaning
v	DMARC1	Version
p	none	Policy

Checks

✗

Policy: none (monitoring only)

DMARC policy is set to 'none', which only monitors but doesn't protect against spoofing. Consider upgrading to 'quarantine' or ideally 'reject'.

#4
✓ Record published #5

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

DMARC record syntax is valid.
!

No aggregate reports (rua)

DMARC record has no rua tag, so you receive no aggregate reports about who sends mail as your domain. Add rua=mailto:...

#19

DKIM

warn

No keys found under the checked selectors

Found

Selectors: None found
_domainkey: NOERROR

Checks

!

No key under common selectors

The _domainkey name exists but no DKIM key was found under the common selectors. Selectors are provider-specific; check yours with -selector.

#7

DNSSEC

pass

Signed, DS published at parent

Found

DNSKEY records: Yes (2)
DS at parent: Yes
Algorithms: RSASHA256 (8)
Key tags: 37249, 19225
Signatures valid until: 24 November 2026, 18:32 UTC

Checks

✓ Signed, DS published at parent #8

DNSSEC is enabled for this domain (DNSKEY and DS present), providing additional security for DNS lookups.
✓ Signatures valid until 2026-11-24 #21

DNSKEY signatures are valid until 2026-11-24T18:32:06Z.

MX

pass

3 mail servers

Found

Priority	Host	Records	Reverse DNS
10	a2941.mx.srv.dfn.de	A 194.95.233.88 AAAA 2001:638:d:c301:acdc:1979:2:110	a2941.mx.srv.dfn.de ✓ a2941.mx.srv.dfn.de ✓
10	b2941.mx.srv.dfn.de	A 194.95.235.88 AAAA 2001:638:d:c302:acdc:1979:2:110	b2941.mx.srv.dfn.de ✓ b2941.mx.srv.dfn.de ✓
10	c2941.mx.srv.dfn.de	A 194.95.239.88 AAAA 2001:638:d:c303:acdc:1979:2:110	c2941.mx.srv.dfn.de ✓ c2941.mx.srv.dfn.de ✓

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.
✓ No CNAME targets #22

No MX records point to a CNAME.
✓ Reverse DNS confirmed #30

All 6 MX addresss have a PTR record that resolves back to them.

TLS

warn

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

Found

DANE (TLSA records)

MX host	TLSA	DNSSEC
a2941.mx.srv.dfn.de	3 0 1 9bec67f55f2afdb7…	Yes
b2941.mx.srv.dfn.de	3 0 1 9bec67f55f2afdb7…	Yes
c2941.mx.srv.dfn.de	3 0 1 9bec67f55f2afdb7…	Yes

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
✓ DANE on all MX hosts #36

All 3 MX hosts publish DNSSEC-validated TLSA records.

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