Mail domain report: transparency.de

SPF

pass

SPF record published

Found

Record: v=spf1 include:spf.protection.outlook.com include:spf.crsend.com -all
DNS lookups: 2 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

No ptr mechanism found in SPF record.
✓ 2 of 10 DNS lookups #2

SPF record needs 2 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

fail

p=none (_dmarc.transparency.de)

Found

Record: v=DMARC1;p=none;sp=none;pct=50;adkim=r;aspf=r;
Found at: _dmarc.transparency.de

Tag	Value	Meaning
v	DMARC1	Version
p	none	Policy
sp	none	Subdomain policy
pct	50	Percentage of mail the policy applies to
adkim	r	DKIM alignment (r = relaxed, s = strict)
aspf	r	SPF alignment (r = relaxed, s = strict)

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

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

1 mail server

Found

Priority	Host	Records	Reverse DNS
0	transparency-de.mail.protection.outlook.com	A 52.101.181.156 A 52.101.73.145 A 52.101.68.29 A 52.101.68.27 AAAA 2a01:111:f403:ca21::c AAAA 2a01:111:f403:ca21::10 AAAA 2a01:111:f403:ca04::d AAAA 2a01:111:f403:ca04::4	mail-wa4pr05cu00104.inbound.protection.outlook.com ✓ mail-am6pr02cu00301.inbound.protection.outlook.com ✓ mail-dbapr03cu00105.inbound.protection.outlook.com ✓ mail-db7pr03cu00503.inbound.protection.outlook.com ✓ mail-matpr04cu00204.inbound.protection.outlook.com ✓ mail-matpr05cu00100.inbound.protection.outlook.com ✓ mail-db6pr03cu00105.inbound.protection.outlook.com ✓ mail-db4pr02cu00204.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

info

no MTA-STS · no TLS-RPT · DANE on 0 of 1 MX hosts

Found

DANE (TLSA records)

MX host	TLSA	DNSSEC
transparency-de.mail.protection.outlook.com	none	-

Lookup error: DNS query for _mta-sts.transparency.de returned SERVFAIL

Checks

i

Could not be checked

The MTA-STS lookup failed, so this could not be checked: DNS query for _mta-sts.transparency.de returned SERVFAIL

#32
i

Could not be checked

The TLS-RPT lookup failed, so this could not be checked: DNS query for _smtp._tls.transparency.de returned SERVFAIL

#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

DNS query for default._bimi.transparency.de returned SERVFAIL

Checks

i

Could not be checked

The BIMI lookup failed, so this could not be checked: DNS query for default._bimi.transparency.de returned SERVFAIL

#38