cmutec.de

Valid Email Server
Domain Lookup › cmutec.de

Domain Overview

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

Checked via [email protected] · 2026-03-30 00:27:13 UTC · ↺ Refresh

MX Hostnames

  • mxe87b.netcup.net
  • mail.cmutec.de

MX Priorities

  • mxe87b.netcup.net: 50
  • mail.cmutec.de: 10

A / AAAA Records

  • 202.61.232.121 ↩ ae879.netcup.net
  • 2a03:4000:61:1519::17:2278 (no PTR)

Mail Server IPs

  • 202.61.232.123 ↩ mxe87b.netcup.net
  • 2a03:4000::52f:8495:36ff:fe01:2c13 ↩ mxe87b.netcup.net

SOA Record

Raw SOA root-dns.netcup.net dnsadmin.netcup.net 2024052031 28800 7200 1209600 86400
Primary NS (mname)
root-dns.netcup.net
Admin Email (rname)
dnsadmin@netcup.net
Serial
2024052031
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

second-dns.netcup.net
third-dns.netcup.net
root-dns.netcup.net

SPF Record

✓ Strict (-all)
v=spf1 mx a include:_spf.webhosting.systems -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; pct=100; fo=1;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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 mx a include:_spf.webhosting.systems -all
Full email verification for cmutec.de

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

SPF / DKIM / DMARC Get 1,000 Free Credits