upb.de

Valid Email Server
Domain Lookup › upb.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
upb.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-25 02:36:29 UTC · ↺ Refresh

MX Hostnames

  • mail.uni-paderborn.de

MX Priorities

  • mail.uni-paderborn.de: 0

A / AAAA Records

  • 131.234.196.27 ↩ nw.uni-paderborn.de
  • 2001:638:502:c036::27 ↩ www.uni-paderborn.de

Mail Server IPs

  • 131.234.142.9 ↩ mail.uni-paderborn.de
  • 2001:638:502:c000:b::9 ↩ mail.uni-paderborn.de

SOA Record

Raw SOA dius.uni-paderborn.de hostmaster.uni-paderborn.de 767263042 10800 3600 604800 86400
Primary NS (mname)
dius.uni-paderborn.de
Admin Email (rname)
hostmaster@uni-paderborn.de
Serial
767263042
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

dufu.uni-paderborn.de
dns-1.dfn.de
dius.uni-paderborn.de

SPF Record

✓ Strict (-all)
v=spf1 include:mail.uni-paderborn.de -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=0; adkim=r; aspf=r; pct=100; rf=afrf; ri=84600; sp=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none

DKIM Selectors

✓ 13 found
google._domainkey
selector1._domainkey
selector2._domainkey
default._domainkey
mail._domainkey
dkim._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
zoho._domainkey
sendgrid._domainkey
mxvault._domainkey
amazonses._domainkey
✓ DKIM properly configured for selector: google

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

4 records
  • SPFv=spf1 include:mail.uni-paderborn.de -all
  • atlassian-domain-verification=NzrKew46SjAClUnQSu5Qax4dsd5JU58NfGIc9SmhF1ZBfo7gYc4kK7RvisQGlbJw
  • adobe-idp-site-verification=c3f69f1d645ad1263241f5fd6d114d7bddf26579871d8118f70d2d44e90a52c4
  • bw=cLqlIr7RU0FSzxt5XO9fjxmtf7vwxZsZQFYyCJkRdPnu
Full email verification for upb.de

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits