sigmoline.de

Valid Email Server
Domain Lookup › sigmoline.de

Domain Overview

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

Checked via [email protected] · 2026-03-31 09:48:18 UTC · ↺ Refresh

MX Hostnames

  • smtp-01.tld.t-online.de
  • smtp-02.tld.t-online.de

MX Priorities

  • smtp-02.tld.t-online.de: 10
  • smtp-01.tld.t-online.de: 10

A / AAAA Records

  • 80.157.192.206 (no PTR)

Mail Server IPs

  • 194.25.134.12 ↩ smtp-02.tld.t-online.de
  • 194.25.134.76 ↩ smtp-01.tld.t-online.de

SOA Record

Raw SOA dns01-tld.t-online.de dns.telekom.de 2024041101 21600 3600 604800 86400
Primary NS (mname)
dns01-tld.t-online.de
Admin Email (rname)
dns@telekom.de
Serial
2024041101
Refresh
21600s
Retry
3600s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

dns01-tld.t-online.de
dns02-tld.t-online.de

SPF Record

✓ Strict (-all)
v=spf1 ip4:194.25.134.0/24 ip4:62.157.140.0/22 include:t-online.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 ip4:194.25.134.0/24 ip4:62.157.140.0/22 include:t-online.de -all
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