Mail domain report: uni-hohenheim.de

SPF

pass

SPF record published

Record: v=spf1 mx ip4:144.41.3.88/32 ip4:144.41.4.88/31 ip4:144.41.4.126/32 ip6:2001:7c0:2700:1004::126/64 ~all
DNS lookups: 1 of 10
Void lookups: 0 of 2

✓ No deprecated ptr mechanism #1

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

SPF record needs 1 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.

fail

No DMARC record found

warn

No keys found under the checked selectors

warn

Not signed

pass

3 mail servers

Priority	Host	Records	Reverse DNS
10	smtp1.rz.uni-hohenheim.de	A 144.41.4.41 AAAA 2001:7c0:2700:1004::41	smtp1.rz.uni-hohenheim.de ✓ smtp1.rz.uni-hohenheim.de ✓
10	smtp2.rz.uni-hohenheim.de	A 144.41.4.42 AAAA 2001:7c0:2700:1004::42	smtp2.rz.uni-hohenheim.de ✓ smtp2.rz.uni-hohenheim.de ✓
30	smtp4.rz.uni-hohenheim.de	A 144.41.4.125 AAAA 2001:7c0:2700:1004::125	smtp4.rz.uni-hohenheim.de ✓ smtp4.rz.uni-hohenheim.de ✓

✓ 3 MX records #9

Found 3 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.
✓ Redundant MX hosts #12

Found 3 MX records, which provides redundancy for email delivery.
✓ At most 5 MX records #13

Found 3 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 6 MX addresss have a PTR record that resolves back to them.

fail

MTA-STS record without policy · TLS-RPT · DANE on 0 of 3 MX hosts

MTA-STS record: v=STSv1; id=20231114T090101Z;
Policy URL: https://mta-sts.uni-hohenheim.de/.well-known/mta-sts.txt
Policy error: https://mta-sts.uni-hohenheim.de/.well-known/mta-sts.txt returned HTTP 503
TLS-RPT record: v=TLSRPTv1;rua=mailto:sts-reports@uni-hohenheim.de

✓ Record published #32

MTA-STS record found with id 20231114T090101Z.
✗

Policy not reachable

The MTA-STS record exists but the policy could not be fetched, so senders ignore MTA-STS: https://mta-sts.uni-hohenheim.de/.well-known/mta-sts.txt returned HTTP 503.

#33
✓ Reports enabled #35

TLS reports are sent to: mailto:sts-reports@uni-hohenheim.de
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

info

No BIMI record