tubex.de

Valid Email Server

Domain Overview

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

Checked via [email protected] · 2026-05-19 04:30:16 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

  • tubex-de.mail.protection.outlook.com: 0

A / AAAA Records

  • 217.160.0.181 ↩ 217-160-0-181.elastic-ssl.ui-r.com
  • 2001:8d8:100f:f000::228 ↩ 2001-08d8-100f-f000-0000-0000-0000-0228.elastic-ssl.ui-r.com

Mail Server IPs

  • 52.101.73.4 ↩ mail-am0pr83cu00404.inbound.protection.outlook.com
  • 52.101.73.15 ↩ mail-am9pr04cu00107.inbound.protection.outlook.com
  • 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
  • 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::9 ↩ mail-as8pr04cu00801.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::e ↩ mail-am7pr05cu00206.inbound.protection.outlook.com

SOA Record

Raw SOA ns1123.ui-dns.de hostmaster.1and1.com 2017052444 28800 7200 604800 300
Primary NS (mname)
ns1123.ui-dns.de
Admin Email (rname)
hostmaster@1and1.com
Serial
2017052444
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns1123.ui-dns.org
ns1123.ui-dns.biz
ns1123.ui-dns.com
ns1123.ui-dns.de

SPF Record

✓ Strict (-all)
v=spf1 mx ip4:91.25.141.123 ip4:213.33.93.226 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1;p=none;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];ri=86400;fo=0;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]

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

12 records
  • SPFv=spf1 mx ip4:91.25.141.123 ip4:213.33.93.226 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com -all
  • teamviewer-sso-verification=31d7493823664c6dbe47c4bbc0f37ef4
  • swisssign-check=MinJsNcUgUu3wYBrkiFL_uNoWTw
  • bsronmiu8aj1576to2eg33gbfe
  • google-site-verification=1e4pXsnMhWQho8HBbWznddBa5jgydWqfyCBeb7rmUpI
  • swisssign-check=rTkF2uO6dwQnlYOEIpLIijXzdC4
  • adobe-idp-site-verification=6e5b06d402f9faf4f758ac3532b305361aafc72d9a15ba15b2501a03e902ad0e
  • 1password-site-verification=FNS63ES3YNBE7LRUDBTSDMFT3U
  • MS=ms77504436
  • swisssign-check=7Yn9s2zyPSXOFfQyA1fqL5akt4s
  • MS=ms23918680
  • swisssign-check=bY30jq3T0yjnVaOWsnarNR1Wprw
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 tubex.de

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

No credit card required
Get 1,000 Free Credits