filmuniversitaet.de

Checked 21 October 2026, 22:30 UTC · via 8.8.8.8
!Passed with warnings
24 passed 5 warnings 0 failed 1 info

SPF

pass

SPF record published

Found

Record
v=spf1 include:_spf.mlsend.com ip4:195.37.64.7/32 include:_spf.o137.mx.srv.dfn.de ip4:62.204.161.134/32 ip4:62.204.161.135/32 -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

warn

p=reject (_dmarc.filmuniversitaet.de)

Found

Record
v=DMARC1; p=reject; pct=100; adkim=r; aspf=r
Found at
_dmarc.filmuniversitaet.de
TagValueMeaning
vDMARC1Version
prejectPolicy
pct100Percentage of mail the policy applies to
adkimrDKIM alignment (r = relaxed, s = strict)
aspfrSPF 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

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

pass

Signed, DS published at parent

Found

DNSKEY records
Yes (2)
DS at parent
Yes
Algorithms
ECDSAP384SHA384 (14)
Key tags
27312, 54908
Signatures valid until
29 October 2026, 05:50 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 2026-10-29T05:50:21Z.

MX

warn

4 mail servers

Found

PriorityHostRecordsReverse DNS
10a1371.mx.srv.dfn.deA 194.95.232.74a1371.mx.srv.dfn.de ✓
10b1371.mx.srv.dfn.deA 194.95.234.74b1371.mx.srv.dfn.de ✓
10c1371.mx.srv.dfn.deA 194.95.238.74c1371.mx.srv.dfn.de ✓
40mailrel.filmuniversitaet.deA 195.37.64.7mailrel.filmuniversitaet.de ✓

Checks

  • ✓ 4 MX records #9
    Found 4 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: a1371.mx.srv.dfn.de, b1371.mx.srv.dfn.de, c1371.mx.srv.dfn.de, mailrel.filmuniversitaet.de
    #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 4 MX addresss have a PTR record that resolves back to them.

TLS

warn

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

Found

DANE (TLSA records)

MX hostTLSADNSSEC
a1371.mx.srv.dfn.de3 0 1 9bec67f55f2afdb7…Yes
b1371.mx.srv.dfn.de3 0 1 9bec67f55f2afdb7…Yes
c1371.mx.srv.dfn.de3 0 1 9bec67f55f2afdb7…Yes
mailrel.filmuniversitaet.de3 0 1 bab5f48a163ede1b…Yes

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
  • !
    Not configured
    MTA-STS or DANE is used without TLS-RPT, so you get no reports when senders fail to deliver because of TLS problems. Publish _smtp._tls TXT "v=TLSRPTv1; rua=mailto:...".
    #35
  • ✓ DANE on all MX hosts #36
    All 4 MX hosts publish DNSSEC-validated TLSA records.

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