sertronics.de

Valid Email Server
Domain Lookup › sertronics.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
sertronics.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-25 11:18:34 UTC · ↺ Refresh

MX Hostnames

  • mail.sertronics.de

MX Priorities

  • mail.sertronics.de: 10

A / AAAA Records

  • 49.13.139.114 ↩ serweb.sertronics.de

Mail Server IPs

  • 176.9.126.236 ↩ sermx1.sertronics.de

SOA Record

Raw SOA dshh.sertronics.intranet admin.sertronics.de 2025011609 28800 7200 604800 3600
Primary NS (mname)
dshh.sertronics.intranet
Admin Email (rname)
admin@sertronics.de
Serial
2025011609
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

pns.dtag.de
mars.avc-service.de
secondary004.dtag.net

SPF Record

✓ Strict (-all)
v=spf1 ip4:173.212.224.137 ip4:195.243.135.173 ip4:176.9.126.236 ip4:37.27.169.235 ip4:212.18.220.243 -all
📊 DNS lookups: 0/10
✓ 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

3 records
  • MS=ms31727649
  • MS=ms57071431
  • SPFv=spf1 ip4:173.212.224.137 ip4:195.243.135.173 ip4:176.9.126.236 ip4:37.27.169.235 ip4:212.18.220.243 -all
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