Mail domain report: gruene-jugend.de

SPF

fail

SPF record published

Found

Record: v=spf1 include:verdigado.net include:spf.crsend.com include:sendgrid.net include:_spf.pretix.eu -all
DNS lookups: 12 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

No ptr mechanism found in SPF record.
✗

12 DNS lookups, over the limit of 10

SPF record needs 12 DNS lookups (including nested includes), more than the limit of 10. Receivers will return a permerror; reduce includes or flatten the record.

#2
✓ 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=reject (_dmarc.gruene-jugend.de)

Found

Record: v=DMARC1; p=reject; sp=reject; pct=100; aspf=s; adkim=r
Found at: _dmarc.gruene-jugend.de

Tag	Value	Meaning
v	DMARC1	Version
p	reject	Policy
sp	reject	Subdomain policy
pct	100	Percentage of mail the policy applies to
adkim	r	DKIM alignment (r = relaxed, s = strict)
aspf	s	SPF alignment (r = relaxed, s = strict)

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.
!

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
✓ Subdomain policy: reject #20

Subdomains are covered by policy 'reject'.

DKIM

warn

Selectors: google, s1, s2

Found

Selectors: google, s1, s2
_domainkey: NOERROR

Selector	Key	Flags
google	RSA 2048 bits
s1	RSA 2048 bits
s2	RSA 1024 bits

Checks

✓ Keys found: google, s1, s2 #7

DKIM keys found for this domain with selectors: google, s1, s2
!

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: s2 (1024 bits). Rotate to a 2048-bit key.

#23
✓ 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

pass

4 mail servers

Found

Priority	Host	Records	Reverse DNS
10	mx03.mail.verdigado.net	A 168.119.31.7 AAAA 2a01:4f8:d1:a300::7	mx03.mail.verdigado.net ✓ mx03.mail.verdigado.net ✓
20	mx02.mail.verdigado.net	A 95.217.184.48 AAAA 2a01:4f9:c010:8202::1	mx02.mail.verdigado.net ✓ mx02.mail.verdigado.net ✓
30	mx01.mail.verdigado.net	A 168.119.31.5 AAAA 2a01:4f8:d1:a300::5	mx01.mail.verdigado.net ✓ mx01.mail.verdigado.net ✓
40	mx04.mail.verdigado.net	A 91.134.142.93 AAAA 2001:41d0:305:2100::1:16c5	mx04.mail.verdigado.net ✓ mx04.mail.verdigado.net ✓

Checks

✓ 4 MX records #9

Found 4 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 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 8 MX addresss have a PTR record that resolves back to them.

TLS

fail

MTA-STS enforce · TLS-RPT · DANE on 3 of 4 MX hosts

Found

MTA-STS record: v=STSv1; id=20221231
Policy URL: https://mta-sts.gruene-jugend.de/.well-known/mta-sts.txt
Mode: enforce
Allowed MX: *.mail.verdigado.net
Max age: 2678400 seconds
TLS-RPT record: v=TLSRPTv1; rua=mailto:postmaster+tlsrpt@verdigado.net

DANE (TLSA records)

MX host	TLSA	DNSSEC
mx03.mail.verdigado.net	2 1 1 0b9fa5a59eed715c…	No
mx02.mail.verdigado.net	2 1 1 0b9fa5a59eed715c…	No
mx01.mail.verdigado.net	2 1 1 0b9fa5a59eed715c…	No
mx04.mail.verdigado.net	none	-

Checks

✓ Record published #32

MTA-STS record found with id 20221231.
✓ Policy enforced #33

The MTA-STS policy is enforced and cached for 744h0m0s.
✓ 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:postmaster+tlsrpt@verdigado.net
✗

TLSA records not DNSSEC-validated

These MX hosts publish TLSA records that the resolver could not validate with DNSSEC, so senders ignore them or, if validation fails, may refuse delivery: mx03.mail.verdigado.net, mx02.mail.verdigado.net, mx01.mail.verdigado.net.

#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