Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
math.tu-berlin.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-01 14:09:03 UTC · ↺ Refresh
MX Hostnames
- c1861.mx.srv.dfn.de
- a1861.mx.srv.dfn.de
- b1861.mx.srv.dfn.de
MX Priorities
- c1861.mx.srv.dfn.de: 10
- b1861.mx.srv.dfn.de: 10
- a1861.mx.srv.dfn.de: 10
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 194.95.238.130 ↩ c1861.mx.srv.dfn.de
- 194.95.234.130 ↩ b1861.mx.srv.dfn.de
- 194.95.232.130 ↩ a1861.mx.srv.dfn.de
SOA Record
Raw SOA
ns.tu-berlin.de noc.tu-berlin.de 3000001211 21600 3600 2592000 900
Primary NS (mname)
ns.tu-berlin.de
Admin Email (rname)
noc@tu-berlin.de
Serial
3000001211
Refresh
21600s
Retry
3600s
Expire
2592000s
Minimum TTL
900s
Nameservers (NS)
ns.tu-berlin.de
SPF Record
✓ Soft Fail (~all)
v=spf1 mx ip4:130.149.12.212/32 ip4:130.149.7.33/32 ip4:130.149.7.70/32 ip4:141.23.12.141/32 ip4:141.23.12.142/32 ip4:141.23.12.143/32 ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 mx ip4:130.149.12.212/32 ip4:130.149.7.33/32 ip4:130.149.7.70/32 ip4:141.23.12.141/32 ip4:141.23.12.142/32 ip4:141.23.12.143/32 ~all
- adobe-idp-site-verification=ffd3ea12579d31f1fbd888108daec4672f9ea2df11bb84bb9596f276543ee485
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