zao-cottbus.de

Valid Email Server
Domain Lookup › zao-cottbus.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
zao-cottbus.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-20 03:00:14 UTC · ↺ Refresh

MX Hostnames

  • mailgate1.isp-cosimo.de
  • mailgate2.isp-cosimo.de

MX Priorities

  • mailgate2.isp-cosimo.de: 20
  • mailgate1.isp-cosimo.de: 10

A / AAAA Records

  • 185.62.149.42 (no PTR)

Mail Server IPs

  • 185.248.148.8 ↩ mailgate2.isp-cosimo.de
  • 77.235.182.101 ↩ mailgate1.isp-cosimo.de

SOA Record

Raw SOA ns1.c-srv.de isp.cosimo.de 2023051001 28800 7200 604800 3600
Primary NS (mname)
ns1.c-srv.de
Admin Email (rname)
isp@cosimo.de
Serial
2023051001
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns2.c-srv.de
ns3.c-srv.net
ns4.c-srv.net
ns1.c-srv.de

SPF Record

✓ Strict (-all)
v=spf1 include:_spf.isp-cosimo.de -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict 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.isp-cosimo.de -all
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