Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
in.tum.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-19 18:06:28 UTC · ↺ Refresh
MX Hostnames
- mailin.rbg.tum.de
- mailin.rbg.tum.de
MX Priorities
- mailin.rbg.tum.de: 15
- mailin.rbg.tum.de: 25
A / AAAA Records
- 131.159.0.181 ↩ autoredir.ito.cit.tum.de
- 2a09:80c0::181 ↩ autoredir.ito.cit.tum.de
Mail Server IPs
- 131.159.0.192 ↩ mailin-bk2.rbg.tum.de
- 131.159.0.191 ↩ mailin-bk1.rbg.tum.de
- 2a09:80c0::191 ↩ mailin-bk1.rbg.tum.de
- 2a09:80c0::192 ↩ mailin-bk2.rbg.tum.de
SOA Record
Raw SOA
ns1.rbg.tum.de postmaster.rbg.tum.de 1500258093 21600 1800 360000 3600
Primary NS (mname)
ns1.rbg.tum.de
Admin Email (rname)
postmaster@rbg.tum.de
Serial
1500258093
Refresh
21600s
Retry
1800s
Expire
360000s
Minimum TTL
3600s
Nameservers (NS)
ns1.rbg.tum.de
ns2.rbg.tum.de
dns1.lrz.de
dns2.lrz.bayern
dns3.lrz.eu
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.rbg.tum.de ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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
1 record- SPFv=spf1 include:_spf.rbg.tum.de ~all
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