Mail domain report: fdpbt.de

SPF

pass

SPF record published

Found

Record: v=spf1 a mx include:_spf.universum.com ip4:87.253.233.0/24 ip4:87.253.234.0/24 ip4:193.17.243.101/32 ip4:193.17.243.102/32 ip4:193.17.243.103/32 ip4:34.159.67.155 ip4:87.253.238.133 include:spf.mailjet.com include:spf.umantis.com ~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

warn

p=quarantine (_dmarc.fdpbt.de)

Found

Record: v=DMARC1; p=quarantine; rua=mailto:re+33525f08956f@inbound.dmarcdigests.com; ruf=mailto:re+33525f08956f@inbound.dmarcdigests.com; adkim=s; aspf=s; fo=1
Found at: _dmarc.fdpbt.de
External report address: mailto:re+33525f08956f@inbound.dmarcdigests.com (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	quarantine	Policy
rua	mailto:re+33525f08956f@inbound.dmarcdigests.com	Aggregate report addresses
ruf	mailto:re+33525f08956f@inbound.dmarcdigests.com	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:re+33525f08956f@inbound.dmarcdigests.com
✓ Subdomain policy: quarantine #20

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

Report addresses in other domains have published their authorization.

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

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

4 mail servers

Found

Priority	Host	Records	Reverse DNS
50	mail1.dbtg.de	A 193.17.243.101	mail1.dbtg.de ✓
50	mail2.dbtg.de	A 193.17.232.101	mail2.dbtg.de ✓
50	mail3.dbtg.de	A 193.17.243.102	mail3.dbtg.de ✓
500	mail4.dbtg.de	A 193.17.236.101	mail4.dbtg.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: mail1.dbtg.de, mail2.dbtg.de, mail3.dbtg.de, mail4.dbtg.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 4 MX addresss have a PTR record that resolves back to them.

TLS

warn

no MTA-STS · no TLS-RPT · DANE on 4 of 4 MX hosts

Found

DANE (TLSA records)

MX host	TLSA	DNSSEC
mail1.dbtg.de	3 1 1 e4a974c31420186f… 3 1 1 5d0fbd4152c10b28…	Yes
mail2.dbtg.de	3 1 1 5d0fbd4152c10b28… 3 1 1 8818a2e7d9f70535…	Yes
mail3.dbtg.de	3 1 1 5d0fbd4152c10b28… 3 1 1 238bfce604e61351…	Yes
mail4.dbtg.de	3 1 1 3db22ad186cf71fa… 3 1 1 5d0fbd4152c10b28…	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 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