schmidtcolleg.de

Valid Email Server

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
schmidtcolleg.de
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-27 13:31:33 UTC · ↺ Refresh

MX Hostnames

  • alt2.aspmx.l.google.com
  • alt3.aspmx.l.google.com
  • alt1.aspmx.l.google.com
  • aspmx.l.google.com

MX Priorities

  • alt1.aspmx.l.google.com: 20
  • alt3.aspmx.l.google.com: 200
  • aspmx.l.google.com: 10
  • alt2.aspmx.l.google.com: 100

A / AAAA Records

  • 37.148.202.139 ↩ 139.202.148.37.host.secureserver.net

Mail Server IPs

  • 108.177.123.27 ↩ lcscld-in-f27.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)
  • 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
  • 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
  • 142.251.163.27 ↩ wv-in-f27.1e100.net
  • 2607:f8b0:4004:c07::1b ↩ bc-in-f27.1e100.net
  • 172.253.116.26 ↩ dj-in-f26.1e100.net
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net

SOA Record

Raw SOA ns3.stratoserver.net hostmaster.strato-rz.de 2020120540 86400 7200 604800 300
Primary NS (mname)
ns3.stratoserver.net
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020120540
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

ns4.stratoserver.net
ns3.stratoserver.net

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:94.186.159.195 include:_spf.google.com include:mailrelay.opencrm.eu ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; sp=quarantine; aspf=r; adkim=r
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: quarantine

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

4 records
  • google-site-verification=53PGIZari1hqaNpWxCySIN_TFOuMPWcrFhyDfrb1q_A
  • google-site-verification=ZxsspoIkdco73xR-mJWBc3RrqPW0I8nTZOfBI6D4SPM
  • google-site-verification=lX48QuClX2ttBsKX3sf_yu_kqTbtAO2lO0eTLLPuS0U
  • SPFv=spf1 ip4:94.186.159.195 include:_spf.google.com include:mailrelay.opencrm.eu ~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 schmidtcolleg.de

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

No credit card required
Get 1,000 Free Credits