Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tu-darmstadt.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 13:23:42 UTC · ↺ Refresh
MX Hostnames
- a2681.mx.srv.dfn.de
- c2681.mx.srv.dfn.de
- b2681.mx.srv.dfn.de
MX Priorities
- a2681.mx.srv.dfn.de: 10
- b2681.mx.srv.dfn.de: 10
- c2681.mx.srv.dfn.de: 10
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 194.95.233.42 ↩ a2681.mx.srv.dfn.de
- 2001:638:d:c301:acdc:1979:2:e2 ↩ a2681.mx.srv.dfn.de
- 194.95.235.42 ↩ b2681.mx.srv.dfn.de
- 2001:638:d:c302:acdc:1979:2:e2 ↩ b2681.mx.srv.dfn.de
- 194.95.239.42 ↩ c2681.mx.srv.dfn.de
- 2001:638:d:c303:acdc:1979:2:e2 ↩ c2681.mx.srv.dfn.de
SOA Record
Raw SOA
ans1.net.hrz.tu-darmstadt.de hostmaster.net.hrz.tu-darmstadt.de 1112603170 21600 3600 3600000 86400
Primary NS (mname)
ans1.net.hrz.tu-darmstadt.de
Admin Email (rname)
hostmaster@net.hrz.tu-darmstadt.de
Serial
1112603170
Refresh
21600s
Retry
3600s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
ans1.net.hrz.tu-darmstadt.de
ans3.net.hrz.tu-darmstadt.de
ans2.net.hrz.tu-darmstadt.de
ns1.man-da.de
ns2.man-da.de
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.tu-darmstadt.de ?all
📊 DNS lookups: 1/10
? Neutral (?all) — no enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
s1._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- brevo-code:b06168a0ae0d70ff4bd469302deabf93
- google-site-verification=MhVJ4YhH6BFMk3VMQ_okf6dDKl64kAu05XQt9F__0qY
- sophos-domain-verification=58b09958937bb5c99066d94fff466d8f72c294549b004ea1f7fa35a3aa0785be
- ZOOM_verify_9c8RCWNZTp2A1REBULIWUw
- SPFv=spf1 include:_spf.tu-darmstadt.de ?all
- MS=3DB65728A46A4ECFAF5F4A714F39661E1CA144CE
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