stwdo.de

Valid Email Server
Domain Lookup › stwdo.de

Domain Overview

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

Checked via [email protected] · 2026-03-19 18:55:17 UTC · ↺ Refresh

MX Hostnames

  • mx-01-eu-central-1.prod.hydra.sophos.com
  • mx-02-eu-central-1.prod.hydra.sophos.com

MX Priorities

  • mx-02-eu-central-1.prod.hydra.sophos.com: 20
  • mx-01-eu-central-1.prod.hydra.sophos.com: 10

A / AAAA Records

  • 193.175.20.21 ↩ rpha01.stwdo.de

Mail Server IPs

  • 52.57.79.230 ↩ ec2-52-57-79-230.eu-central-1.compute.amazonaws.com
  • 18.159.237.67 ↩ ec2-18-159-237-67.eu-central-1.compute.amazonaws.com

SOA Record

Raw SOA dns.stwdo.de hostmaster.stwdo.de 2026022302 28800 7200 3024000 3600
Primary NS (mname)
dns.stwdo.de
Admin Email (rname)
hostmaster@stwdo.de
Serial
2026022302
Refresh
28800s
Retry
7200s
Expire
3024000s
Minimum TTL
3600s

Nameservers (NS)

dns-2.dfn.de
dns-3.dfn.de
dns-1.dfn.de

SPF Record

✓ Strict (-all)
v=spf1 mx a:mail.stwdo.de ip4:193.175.20.226 ip4:62.55.182.68 include:spf.protection.outlook.com include:_spf_eucentral1.prod.hydra.sophos.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

8 records
  • SPFv=spf1 mx a:mail.stwdo.de ip4:193.175.20.226 ip4:62.55.182.68 include:spf.protection.outlook.com include:_spf_eucentral1.prod.hydra.sophos.com -all
  • sophos-domain-verification=b4363a35c047484f987154bb2820fd82acd87f005fb1eeb2ab67119075f6f31c
  • HARICA-7v6LmpN3lVKQckYwI90
  • 03.06.2025
  • apple-domain-verification=FnLyue3p30fE2EZV
  • MS=3F342F970EA695666D96497BCADD17CD737DBB50
  • openai-domain-verification=dv-an4T8irfVENDbbLVFN59W2uh
  • perplexity-ai-domain-verification-g25vqz=z5sLwreQqCwqboN7fmQAKiANg
Full email verification for stwdo.de

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

SPF / DKIM / DMARC Get 1,000 Free Credits