Mail domain report: th-rosenheim.de

SPF

pass

SPF record published

Record: v=spf1 mx ip4:141.60.0.0/16 ip4:195.200.70.64/26 ip4:46.29.101.1/32 ip4:46.29.101.2/32 ip4:62.67.226.167/32 ip4:217.150.155.10/32 ip4:217.150.155.12/32 include:_spf.o261.mx.srv.dfn.de include:_spf.kdv-fh-bayern.de a:bvbvxmail.bib-bvb.de include:spf.protection.outlook.com a:mail.sop-at.com include:_spf.salesforce.com a:rp.send.cnds.io include:spf.send.cnds.io -all
DNS lookups: 10 of 10
Void lookups: 0 of 2

✓ No deprecated ptr mechanism #1

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

SPF record needs 10 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.

fail

No DMARC record found

warn

No keys found under the checked selectors

pass

Signed, DS published at parent

✓ 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 2026-11-01 #21

DNSKEY signatures are valid until 2026-11-01T09:53:39Z.

warn

3 mail servers

Priority	Host	Records	Reverse DNS
10	a2611.mx.srv.dfn.de	A 194.95.233.28	a2611.mx.srv.dfn.de ✓
10	b2611.mx.srv.dfn.de	A 194.95.235.28	b2611.mx.srv.dfn.de ✓
10	c2611.mx.srv.dfn.de	A 194.95.239.28	c2611.mx.srv.dfn.de ✓

✓ 3 MX records #9

Found 3 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: a2611.mx.srv.dfn.de, b2611.mx.srv.dfn.de, c2611.mx.srv.dfn.de

#11
✓ 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 3 MX addresss have a PTR record that resolves back to them.

warn

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

!

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.

info

No BIMI record