fh-aachen.de

Valid Email Server
Domain Lookup › fh-aachen.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
fh-aachen.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-25 06:29:03 UTC · ↺ Refresh

MX Hostnames

  • mx1.rz.rwth-aachen.de

MX Priorities

  • mx1.rz.rwth-aachen.de: 10

A / AAAA Records

  • 104.20.18.231 (no PTR)
  • 172.66.150.234 (no PTR)
  • 2606:4700:10::ac42:96ea (no PTR)
  • 2606:4700:10::6814:12e7 (no PTR)

Mail Server IPs

  • 137.226.78.57 ↩ mx1.rz.rwth-aachen.de

SOA Record

Raw SOA aitana.ns.cloudflare.com dns.cloudflare.com 2399865294 10000 2400 604800 1800
Primary NS (mname)
aitana.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399865294
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

matteo.ns.cloudflare.com
aitana.ns.cloudflare.com

SPF Record

✓ Strict (-all)
v=spf1 include:_spf.itc.rwth-aachen.de ip4:193.30.112.74 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✓ Reject
v=DMARC1; p=reject; sp=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject

DKIM Selectors

✗ None detected

No 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

6 records
  • spycloud-domain-verification=1501eda8-9875-4d93-b1a4-fbb7d7ea7028
  • SPFv=spf1 include:_spf.itc.rwth-aachen.de ip4:193.30.112.74 -all
  • apple-domain-verification=0tyC9vykFjHF8VSO
  • atlassian-domain-verification=PcucR2bLtyp9lwnTTVQNJrdeQCwJnXHq5I8nv7d3JnACb73II58P5cIdbf5pBTWw
  • cisco-ci-domain-verification=1f0b90a60e27ce20ce84e59c99ea908fa3065214318455bd4a69f74d99a4ba54
  • jetbrains-domain-verification=1jb9kvuyge7ig0wab91sj3cd5
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