Mail domain report: avm.de

SPF

pass

SPF record published

Found

Record: v=spf1 ip4:212.42.244.0/24 ip4:185.12.80.0/22 ip4:85.215.187.195 ip6:2001:bf0:244:244::120 ip6:2001:bf0:244:244::119 ip6:2001:bf0:244:244::94 ip6:2001:bf0:244:244::121 ip6:2001:bf0:244:244::71 ip6:2001:bf0:244:244::75 ip4:46.163.119.15 ip6:2a01:488:66:1000:2ea3:770f:0:1 ip4:116.202.114.165 ip6:2a01:4f8:231:4252::2 a:avm.shared3.montala.com a:news.avm.de a:mail.pi-asp.de include:mail.zendesk.com include:spf.lianamailer.com include:spf.mailjet.com include:spf.crsend.com include:spf.protection.outlook.com -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

warn

p=quarantine (_dmarc.avm.de)

Found

Record: v=DMARC1;p=quarantine;sp=quarantine;adkim=r;aspf=r;fo=1;rf=afrf;ruf=mailto:postmaster@avm.de
Found at: _dmarc.avm.de

Tag	Value	Meaning
v	DMARC1	Version
p	quarantine	Policy
sp	quarantine	Subdomain policy
ruf	mailto:postmaster@avm.de	Failure report addresses
adkim	r	DKIM alignment (r = relaxed, s = strict)
aspf	r	SPF alignment (r = relaxed, s = strict)
fo	1	Failure reporting options
rf	afrf	Failure report format

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.
!

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: 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

Selectors: mail, selector1

Found

Selectors: mail, selector1
_domainkey: NOERROR

Selector	Key	Flags
mail	RSA 1024 bits
selector1	RSA 2048 bits

Checks

✓ Keys found: mail, selector1 #7

DKIM keys found for this domain with selectors: mail, selector1
!

1024-bit DKIM key

1024-bit RSA keys are the minimum and are considered weak today: mail (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

3 mail servers

Found

Priority	Host	Records	Reverse DNS
5	mx1.avm.de	A 212.42.244.120 AAAA 2001:bf0:244:244::120	mail.avm.de ✓ mail.avm.de ✓
5	mx2.avm.de	A 212.42.244.119 AAAA 2001:bf0:244:244::119	mail.avm.de ✓ mail.avm.de ✓
5	mx3.avm.de	A 212.42.244.94 AAAA 2001:bf0:244:244::94	mail.avm.de ✓ mail.avm.de ✓

Checks

✓ 3 MX records #9

Found 3 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 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 6 MX addresss have a PTR record that resolves back to them.

TLS

info

MTA-STS enforce · TLS-RPT · DANE on 0 of 3 MX hosts

Found

MTA-STS record: v=STSv1; id=2026070200
Policy URL: https://mta-sts.avm.de/.well-known/mta-sts.txt
Mode: enforce
Allowed MX: mx1.avm.de, mx2.avm.de, mx3.avm.de
Max age: 1209600 seconds
TLS-RPT record: v=TLSRPTv1; rua=mailto:tls-reports@fritz.com

DANE (TLSA records)

MX host	TLSA	DNSSEC
mx1.avm.de	none	-
mx2.avm.de	none	-
mx3.avm.de	none	-

Checks

✓ Record published #32

MTA-STS record found with id 2026070200.
✓ Policy enforced #33

The MTA-STS policy is enforced and cached for 336h0m0s.
✓ 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:tls-reports@fritz.com
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