Mail domain report: ekom21.de

SPF

pass

SPF record published

Found

Record: v=spf1 ip4:195.226.81.0/24 ip4:62.156.249.0/24 ip4:80.69.206.32/27 ip4:80.69.206.64/27 ip4:80.69.206.96/27 ip4:80.69.202.112/28 ip4:80.69.201.0/24 ip6:2a02:1010:c210:001c::/64 -all
DNS lookups: 0 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

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

SPF record needs 0 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.ekom21.de)

Found

Record: v=DMARC1; p=quarantine; rua=mailto:dmarc@ekom21.de; ruf=mailto:dmarc@ekom21.de; fo=1; adkim=s; aspf=s
Found at: _dmarc.ekom21.de

Tag	Value	Meaning
v	DMARC1	Version
p	quarantine	Policy
rua	mailto:dmarc@ekom21.de	Aggregate report addresses
ruf	mailto:dmarc@ekom21.de	Failure report addresses
adkim	s	DKIM alignment (r = relaxed, s = strict)
aspf	s	SPF alignment (r = relaxed, s = strict)
fo	1	Failure reporting options

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:dmarc@ekom21.de
✓ Subdomain policy: quarantine #20

Subdomains are covered by policy 'quarantine'.
✓ Report addresses in own domain #29

All report addresses are in your own organizational domain.

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: 65056, 27753
Signatures valid until: 29 October 2026, 00:00 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 2026-10-29 #21

DNSKEY signatures are valid until 2026-10-29T00:00:00Z.

MX

warn

4 mail servers

Found

Priority	Host	Records	Reverse DNS
10	mx3sgie.ekom21.de	A 195.226.81.82 AAAA 2a02:1010:c210:2d::2b	mx3sgie.ekom21.de ✓ mx3sgie.ekom21.de ✓
10	mx3skas.kgrz-ks.de	A 80.69.201.82	mx3skas.kgrz-ks.de ✓
10	mx4skas.kgrz-ks.de	A 80.69.201.83	mx4skas.kgrz-ks.de ✓
10	mx5skas.kgrz-ks.de	A 62.156.249.82	mx5skas.kgrz-ks.de ✓

Checks

✓ 4 MX records #9

Found 4 MX records for this domain.
✓ All hosts resolve #10

All MX records resolve to valid IP addresses.
!

Hosts without IPv6

The following MX hosts could not be resolved to IPv6 addresses: mx3skas.kgrz-ks.de, mx4skas.kgrz-ks.de, mx5skas.kgrz-ks.de

#11
✓ Redundant MX hosts #12

Found 4 MX records, which provides redundancy for email delivery.
✓ At most 5 MX records #13

Found 4 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 5 MX addresss have a PTR record that resolves back to them.

TLS

pass

MTA-STS enforce · TLS-RPT · DANE on 4 of 4 MX hosts

Found

MTA-STS record: v=STSv1; id=175274625340Z;
Policy URL: https://mta-sts.ekom21.de/.well-known/mta-sts.txt
Mode: enforce
Allowed MX: mx3skas.kgrz-ks.de, mx4skas.kgrz-ks.de, mx5skas.kgrz-ks.de, mx3sgie.ekom21.de
Max age: 604800 seconds
TLS-RPT record: v=TLSRPTv1; rua=mailto:dmarc@ekom21.de;

DANE (TLSA records)

MX host	TLSA	DNSSEC
mx3sgie.ekom21.de	3 1 1 9da03b927f09304f… 3 1 2 28f4354186e65a7e…	Yes
mx3skas.kgrz-ks.de	3 1 2 26ae2d15450c3d6e… 3 1 1 dbde190f2aa55360…	Yes
mx4skas.kgrz-ks.de	3 1 1 d235c7f114266624… 3 1 2 a407124e239614f1…	Yes
mx5skas.kgrz-ks.de	3 1 2 ef65f6582bb4e2f2… 3 1 1 456cd32ad6239448…	Yes

Checks

✓ Record published #32

MTA-STS record found with id 175274625340Z.
✓ Policy enforced #33

The MTA-STS policy is enforced and cached for 168h0m0s.
✓ All MX hosts covered #34

Every MX host matches an mx: line of the MTA-STS policy.
✓ Reports enabled #35

TLS reports are sent to: mailto:dmarc@ekom21.de
✓ DANE on all MX hosts #36

All 4 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