tetraeder.com

Valid Email Server
Domain Lookup › tetraeder.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
tetraeder.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-28 20:15:15 UTC · ↺ Refresh

MX Hostnames

  • mail6.tetraeder.com
  • mail.tetraeder.com
  • mail5.tetraeder.com

MX Priorities

  • mail6.tetraeder.com: 30
  • mail5.tetraeder.com: 20
  • mail.tetraeder.com: 10

A / AAAA Records

  • 128.140.98.110 ↩ static.110.98.140.128.clients.your-server.de

Mail Server IPs

  • 195.201.140.49 ↩ mail.tetraeder.com

SOA Record

Raw SOA ns.udag.de hostmaster.united-domains.de 2024092300 10800 3600 604800 3600
Primary NS (mname)
ns.udag.de
Admin Email (rname)
hostmaster@united-domains.de
Serial
2024092300
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns.udag.de
ns.udag.net
ns.udag.org

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:144.76.139.44 ip4:148.251.138.220 ip4:195.201.140.49 ip4:116.203.2.235 ip4:80.147.220.114 ip4:94.130.51.207 ip4:116.203.5.17 ip4:188.245.152.147 ip4:188.245.121.52 ip4:128.140.98.110 include:_spf.google.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

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

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

2 records
  • google-site-verification=Rh5S1_eHvkbCmNFeuGQD68Mq4tlsnDsIfgbl2HbRlG4
  • SPFv=spf1 ip4:144.76.139.44 ip4:148.251.138.220 ip4:195.201.140.49 ip4:116.203.2.235 ip4:80.147.220.114 ip4:94.130.51.207 ip4:116.203.5.17 ip4:188.245.152.147 ip4:188.245.121.52 ip4:128.140.98.110 include:_spf.google.com ~all
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 tetraeder.com

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

No credit card required
Get 1,000 Free Credits