Mail domain report: augustinerkeller.de

SPF

fail

SPF record published

Found

Record: v=spf1 mx a include:reservision.com include:spf.mailsec.omc.net ip6:2a02:2800::/32 include:_spf.strato.com include:spf.protection.outlook.com include:mailgun.org -all
DNS lookups: 15 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

No ptr mechanism found in SPF record.
✗

15 DNS lookups, over the limit of 10

SPF record needs 15 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

fail

p=none (_dmarc.augustinerkeller.de)

Found

Record: v=DMARC1; p=none;
Found at: _dmarc.augustinerkeller.de

Tag	Value	Meaning
v	DMARC1	Version
p	none	Policy

Checks

✗

Policy: none (monitoring only)

DMARC policy is set to 'none', which only monitors but doesn't protect against spoofing. Consider upgrading to 'quarantine' or ideally 'reject'.

#4
✓ Record published #5

DMARC record exists for this domain.
✓ Valid syntax #17

DMARC record syntax is valid.
!

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

DKIM

warn

Selectors: selector1, mx

Found

Selectors: selector1, mx
_domainkey: NOERROR

Selector	Key	Flags
selector1	RSA 2048 bits
mx	RSA 1024 bits

Checks

✓ Keys found: selector1, mx #7

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

1024-bit DKIM key

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

pass

Signed, DS published at parent

Found

DNSKEY records: Yes (2)
DS at parent: Yes
Algorithms: RSASHA256 (8)
Key tags: 56410, 5616
Signatures valid until: 29 October 2026, 00:00 UTC

Checks

✓ 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 2026-10-29 #21

DNSKEY signatures are valid until 2026-10-29T00:00:00Z.

MX

warn

4 mail servers

Found

Priority	Host	Records	Reverse DNS
0	augustinerkeller-de.mail.protection.outlook.com	A 52.101.170.2 A 52.101.170.0 A 52.101.170.1 A 52.101.168.0 AAAA 2a01:111:f403:ca27:: AAAA 2a01:111:f403:ca2d:: AAAA 2a01:111:f403:ca2d::1 AAAA 2a01:111:f403:ca2d::2	mail-fr6p281cu00202.inbound.protection.outlook.com ✓ mail-fr5p281cu00500.inbound.protection.outlook.com ✓ mail-fr4p281cu03101.inbound.protection.outlook.com ✓ mail-beup281cu00100.inbound.protection.outlook.com ✓ mail-beup281cu00100.inbound.protection.outlook.com ✓ mail-fr5p281cu00500.inbound.protection.outlook.com ✓ mail-fr4p281cu03101.inbound.protection.outlook.com ✓ mail-fr6p281cu00202.inbound.protection.outlook.com ✓
1000	mx01.reservision.com	(does not resolve)
1000	mx02.reservision.com	(does not resolve)
1000	mx03.reservision.com	(does not resolve)

Checks

✓ 4 MX records #9

Found 4 MX records for this domain.
!

Hosts without IP addresses

The following MX hosts could not be resolved to IP addresses: mx01.reservision.com, mx02.reservision.com, mx03.reservision.com

#10
!

Hosts without IPv6

The following MX hosts could not be resolved to IPv6 addresses: mx01.reservision.com, mx02.reservision.com, mx03.reservision.com

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

TLS

warn

no MTA-STS · no TLS-RPT · DANE on 0 of 4 MX hosts

Found

DANE (TLSA records)

MX host	TLSA	DNSSEC
augustinerkeller-de.mail.protection.outlook.com	none	-
mx01.reservision.com	none	-
mx02.reservision.com	none	-
mx03.reservision.com	none	-

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
i

Not configured

TLS-RPT lets senders report TLS delivery problems to you. It is most useful together with MTA-STS or DANE.

#35
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