Mail domain report: aida.de

SPF

pass

SPF record published

Found

Record: v=spf1 mx include:spf.protection.outlook.com a:smtpw.cytric.net include:inxserver.com ip4:141.144.229.35 ip4:138.2.142.134 ip4:54.171.131.249 include:spf.tds.de mx:costa.it ip4:185.18.100.0/24 include:amazonses.com ip4:213.146.75.21 ip4:213.146.75.22 ip4:213.146.75.23 -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.aida.de)

Found

Record: v=DMARC1; p=quarantine; rua=mailto:ij1phltz@dmarc.inxmail.de,mailto:carnivaldmarc@aida.de;
Found at: _dmarc.aida.de
External report address: mailto:ij1phltz@dmarc.inxmail.de (authorized)

Tag	Value	Meaning
v	DMARC1	Version
p	quarantine	Policy
rua	mailto:ij1phltz@dmarc.inxmail.de,mailto:carnivaldmarc@aida.de	Aggregate report addresses

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:ij1phltz@dmarc.inxmail.de, mailto:carnivaldmarc@aida.de
✓ 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

Selectors: selector1, selector2, s1, s2

Found

Selectors: selector1, selector2, s1, s2
_domainkey: NOERROR

Selector	Key	Flags
selector1	RSA 2048 bits
selector2	RSA 2048 bits
s1	RSA 2048 bits
s2	RSA 1024 bits

Checks

✓ Keys found: selector1, selector2, s1, s2 #7

DKIM keys found for this domain with selectors: selector1, selector2, 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

warn

1 mail server

Found

Priority	Host	Records	Reverse DNS
5	aida-de.mail.protection.outlook.com	A 52.101.194.13 A 52.101.40.28 A 52.101.202.150 A 52.101.41.28 AAAA 2a01:111:f403:f903::3 AAAA 2a01:111:f403:c902:: AAAA 2a01:111:f403:f904::2 AAAA 2a01:111:f403:c927::8	mail-ch0pr04cu00605.inbound.protection.outlook.com ✓ mail-cy1pr02cu00104.inbound.protection.outlook.com ✓ mail-ph6pr04cu00106.inbound.protection.outlook.com ✓ mail-sj0pr03cu01504.inbound.protection.outlook.com ✓ mail-mn0pr04cu00203.inbound.protection.outlook.com ✓ mail-sj2pr05cu00300.inbound.protection.outlook.com ✓ mail-ds2pr05cu00102.inbound.protection.outlook.com ✓ mail-bn3pr0301cu00200.inbound.protection.outlook.com ✓

Checks

✓ 1 MX record #9

Found 1 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.
!

Single MX host, no backup

Only one MX record found. For better email reliability, consider adding at least one backup MX server.

#12
✓ At most 5 MX records #13

Found 1 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 1 MX hosts

Found

DANE (TLSA records)

MX host	TLSA	DNSSEC
aida-de.mail.protection.outlook.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

pass

https://s3.eu-west-1.amazonaws.com/de.aida.bimi/aida_cruises.svg

Found

Record: v=BIMI1;l=https://s3.eu-west-1.amazonaws.com/de.aida.bimi/aida_cruises.svg;a=https://s3.eu-west-1.amazonaws.com/de.aida.bimi/aida_cruises.pem;
Found at: default._bimi.aida.de
Logo: https://s3.eu-west-1.amazonaws.com/de.aida.bimi/aida_cruises.svg
Certificate: https://s3.eu-west-1.amazonaws.com/de.aida.bimi/aida_cruises.pem

Checks

✓ Logo and certificate published #38

BIMI logo: https://s3.eu-west-1.amazonaws.com/de.aida.bimi/aida_cruises.svg; certificate: https://s3.eu-west-1.amazonaws.com/de.aida.bimi/aida_cruises.pem
✓ DMARC meets BIMI requirements #39

DMARC is enforced on all mail, as BIMI requires.