Mail domain report: heliosventilatoren.de

SPF

pass

SPF record published

Found

Record: v=spf1 mx include:inxserver.com ip6:2a01:4f8:251:180f:155e:a9f8:55ba:9b83 ip4:5.35.246.207 ip4:49.12.65.231 ip4:195.201.106.143 ip4:168.119.151.86 ip4:168.119.151.85 ip4:168.119.151.117 ip4:49.12.105.188 ip4:94.130.59.26 ip4:185.75.164.208/28 include:spf.secumail.de -all
DNS lookups: 4 of 10
Void lookups: 0 of 2

Checks

✓ No deprecated ptr mechanism #1

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

SPF record needs 4 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=reject (_dmarc.heliosventilatoren.de)

Found

Record: v=DMARC1; p=reject; adkim=r; aspf=s;
Found at: _dmarc.heliosventilatoren.de

Tag	Value	Meaning
v	DMARC1	Version
p	reject	Policy
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

pass

Selectors: default, mail

Found

Selectors: default, mail
_domainkey: NOERROR

Selector	Key	Flags
default	RSA 2048 bits
mail	RSA 2048 bits

Checks

✓ Keys found: default, mail #7

DKIM keys found for this domain with selectors: default, mail
✓ Strong keys #23

DKIM keys are strong enough: default: RSA 2048 bits; mail: RSA 2048 bits.
✓ 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
10	hvs-pmg.2hv.de	A 185.75.164.212	dyn-185-75-164-212.stiegeler.com (does not resolve back)

Checks

✓ 1 MX record #9

Found 1 MX records for this domain.
✓ All hosts resolve #10

All MX records resolve to valid IP addresses.
!

Hosts without IPv6

The following MX hosts could not be resolved to IPv6 addresses: hvs-pmg.2hv.de

#11
!

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 does not match

The PTR name of these addresses does not resolve back to the same address: 185.75.164.212 -> dyn-185-75-164-212.stiegeler.com.

#30

TLS

warn

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

Found

DANE (TLSA records)

MX host	TLSA	DNSSEC
hvs-pmg.2hv.de	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