sws.de

Valid Email Server

Domain Overview

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

Checked via [email protected] · 2026-04-02 18:55:39 UTC · ↺ Refresh

MX Hostnames

  • sws-de.mail.protection.outlook.com

MX Priorities

  • sws-de.mail.protection.outlook.com: 10

A / AAAA Records

  • 185.210.100.4 (no PTR)

Mail Server IPs

  • 52.101.68.12 ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
  • 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
  • 52.101.73.26 ↩ mail-as9pr05cu01302.inbound.protection.outlook.com
  • 52.101.68.16 ↩ mail-db4pr02cu00400.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::d ↩ mail-as9pr05cu01305.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::c ↩ mail-as8pr05cu00304.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::7 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::8 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA a.ns14.net hostmaster.sws.de 2025111700 43200 7200 1209600 86400
Primary NS (mname)
a.ns14.net
Admin Email (rname)
hostmaster@sws.de
Serial
2025111700
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

c.ns14.net
a.ns14.net
d.ns14.net
b.ns14.net

SPF Record

✓ Strict (-all)
v=spf1 mx include:spf.protection.outlook.com a:con1.acpmon.de a:con2.acpmon.de -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; fo=1; ri=3600; rua=mailto:[email protected]; ruf=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

DKIM Selectors

✓ 2 found
s1._domainkey
s2._domainkey
✓ DKIM properly configured for selector: s1

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

All TXT Records

10 records
  • SPFv=spf1 mx include:spf.protection.outlook.com a:con1.acpmon.de a:con2.acpmon.de -all
  • 70fc070965983ebe9c1d9287277ce7a16d5e124b05b8a8bd48631381f7b9c05d
  • MS=ms92073091
  • Td3qPzb+SUWwnryRM/xN/BwG2V6VZJYZRhh1OcObWZRvoSiuuIiPtH8vzlP71CYYhhnImmDQpTAHZS3mp9kzIQ==
  • MS=ms25450444
  • duo_sso_verification=Ik6h2JSSIgfOiEj62aBwXSKsOKNYMcDbrVLcMaJaWJcx3BXpPurMDibO8ZjbcSPh
  • dC0FgshGzzKQGU1fyoEUpNii9wWG5a7ZOYu35yEAQ89ThRj+1U23+Kp8950NyOOgUEsONUuclq9u+WogbU16nQ==
  • sophos-domain-verification=278631d8ab8d9a1ab437e82c80efdc67e5e9363f848691378c68c5162ad06640
  • SFMC-tt95HbI050HXCwb3soS_w2Ln5yGcGv4GbW0kfWZU
  • Q1ICHYBlSEAlcgIdNPT48Qp1RQSXkAk1vo4EHnWvXrHeWZwo1xlueIPqtdo60MbF9mpSgt4yDG0s0YbDqTKggQ==
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site
See demo & docs
Deep verification
Full email verification for sws.de

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits