Mail domain report: m-net.de

SPF

pass

SPF record published

Found

Record: v=spf1 ip4:207.54.68.144 ip4:207.54.69.11 ip4:188.164.233.73 ip4:188.164.233.71 include:_spf.m-online.net include:_spf.m-net.de -all
DNS lookups: 8 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

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

SPF record needs 8 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

pass

p=reject (_dmarc.m-net.de)

Found

Record: v=DMARC1; p=reject; rua=mailto:dmarc_report@m-net.de,mailto:re+xsvyieuo3ub@inbound.dmarcdigests.com; pct=100
Found at: _dmarc.m-net.de
External report address: mailto:re+xsvyieuo3ub@inbound.dmarcdigests.com (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	reject	Policy
pct	100	Percentage of mail the policy applies to
rua	mailto:dmarc_report@m-net.de,mailto:re+xsvyieuo3ub@inbound.dmarcdigests.com	Aggregate report addresses

Checks

✓ Policy: reject #4

DMARC policy is set to 'reject', which provides the strongest protection against email spoofing.
✓ 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_report@m-net.de, mailto:re+xsvyieuo3ub@inbound.dmarcdigests.com
✓ Subdomain policy: reject #20

Subdomains are covered by policy 'reject'.
✓ External report addresses authorized #29

Report addresses in other domains have published their authorization.

DKIM

pass

Selectors: selector1, selector2

Found

Selectors: selector1, selector2
_domainkey: NOERROR

Selector	Key	Flags
selector1	RSA 2048 bits
selector2	RSA 2048 bits

Checks

✓ Keys found: selector1, selector2 #7

DKIM keys found for this domain with selectors: selector1, selector2
✓ Strong keys #23

DKIM keys are strong enough: selector1: RSA 2048 bits; selector2: 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

2 mail servers

Found

Priority	Host	Records	Reverse DNS
50	mx1.hc138-81.eu.iphmx.com	A 207.54.68.144 A 207.54.69.11	esa1.hc138-81.eu.iphmx.com ✓ esa2.hc138-81.eu.iphmx.com ✓
50	mx2.hc138-81.eu.iphmx.com	A 207.54.68.144 A 207.54.69.11	esa1.hc138-81.eu.iphmx.com ✓ esa2.hc138-81.eu.iphmx.com ✓

Checks

✓ 2 MX records #9

Found 2 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: mx1.hc138-81.eu.iphmx.com, mx2.hc138-81.eu.iphmx.com

#11
✓ Redundant MX hosts #12

Found 2 MX records, which provides redundancy for email delivery.
✓ At most 5 MX records #13

Found 2 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 4 MX addresss have a PTR record that resolves back to them.

TLS

info

MTA-STS enforce · TLS-RPT · DANE on 0 of 2 MX hosts

Found

MTA-STS record: v=STSv1; id=20251117090000Z
Policy URL: https://mta-sts.m-net.de/.well-known/mta-sts.txt
Mode: enforce
Allowed MX: mx1.hc138-81.eu.iphmx.com, mx2.hc138-81.eu.iphmx.com, *.mail.protection.outlook.com
Max age: 15552000 seconds
TLS-RPT record: v=TLSRPTv1; rua=mailto:mta-sts-reporting@m-net.de

DANE (TLSA records)

MX host	TLSA	DNSSEC
mx1.hc138-81.eu.iphmx.com	none	-
mx2.hc138-81.eu.iphmx.com	none	-

Checks

✓ Record published #32

MTA-STS record found with id 20251117090000Z.
✓ Policy enforced #33

The MTA-STS policy is enforced and cached for 4320h0m0s.
✓ 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:mta-sts-reporting@m-net.de
i

Not used

No MX host publishes TLSA records. DANE lets senders verify your mail server's certificate through DNSSEC; it requires DNSSEC on the MX host's zone.

#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