udw.de

Valid Email Server
Domain Lookup › udw.de

Domain Overview

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

Checked via [email protected] · 2026-04-03 17:41:12 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 82.212.215.200 ↩ web03.isite.de
  • 2a00:cb0:2:3::19a ↩ web03.isite.de

Mail Server IPs

  • 52.101.170.1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 52.101.170.0 ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 52.101.170.2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com
  • 52.101.168.0 ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca27:: ↩ mail-beup281cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::1 ↩ mail-fr4p281cu03101.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d:: ↩ mail-fr5p281cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca2d::2 ↩ mail-fr6p281cu00202.inbound.protection.outlook.com

SOA Record

Raw SOA dns.iwelt-ag.net domainmaster.iwelt-ag.net 2025052801 43200 3600 2419200 600
Primary NS (mname)
dns.iwelt-ag.net
Admin Email (rname)
domainmaster@iwelt-ag.net
Serial
2025052801
Refresh
43200s
Retry
3600s
Expire
2419200s
Minimum TTL
600s

Nameservers (NS)

dns3.iwelt-ag.de
dns.iwelt-ag.net
dns2.iwelt-ag.net

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:udw.de include:_spf.isite.de -all
📊 DNS lookups: 3/10
✓ 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: 392 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

5 records
  • _telesec-domain-validation=2022-08-17_mRqV8NVkCF2RSpZzHAfEu9ZxOlajPxDWY7d95ky2cQn1zsxLxj
  • kjcd1xq0ndctgsh6kyf20dv6p47mj503
  • g6kncqhcyxk48p6ct4259bvp4pypq48p
  • MS=ms61082600
  • SPFv=spf1 include:spf.protection.outlook.com include:udw.de include:_spf.isite.de -all
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