swcz.de

Valid Email Server
Domain Lookup › swcz.de

Domain Overview

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

Checked via [email protected] · 2026-03-29 23:24:59 UTC · ↺ Refresh

MX Hostnames

  • a1551.mx.srv.dfn.de
  • c1551.mx.srv.dfn.de
  • b1551.mx.srv.dfn.de

MX Priorities

  • c1551.mx.srv.dfn.de: 10
  • a1551.mx.srv.dfn.de: 10
  • b1551.mx.srv.dfn.de: 10

A / AAAA Records

  • 134.109.252.83 ↩ swcz-web.swcz.tu-chemnitz.de
  • 2001:638:911:70c:134:109:252:83 ↩ swcz-web.swcz.tu-chemnitz.de

Mail Server IPs

  • 194.95.238.91 ↩ c1551.mx.srv.dfn.de
  • 2001:638:d:c303:acdc:1979:2:3b ↩ c1551.mx.srv.dfn.de
  • 194.95.232.91 ↩ a1551.mx.srv.dfn.de
  • 2001:638:d:c301:acdc:1979:2:3b ↩ a1551.mx.srv.dfn.de
  • 194.95.234.91 ↩ b1551.mx.srv.dfn.de
  • 2001:638:d:c302:acdc:1979:2:3b ↩ b1551.mx.srv.dfn.de

SOA Record

Raw SOA ns1.your-server.de postmaster.your-server.de 2026032803 86400 10800 3600000 7200
Primary NS (mname)
ns1.your-server.de
Admin Email (rname)
postmaster@your-server.de
Serial
2026032803
Refresh
86400s
Retry
10800s
Expire
3600000s
Minimum TTL
7200s

Nameservers (NS)

ns1.your-server.de
ns.second-ns.com
ns3.second-ns.de

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.tu-chemnitz.de include:_spf.o155.mx.srv.dfn.de ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

1 record
  • SPFv=spf1 include:_spf.tu-chemnitz.de include:_spf.o155.mx.srv.dfn.de ~all
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