congstar.de

Valid Email Server
Domain Lookup › congstar.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
congstar.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-02 16:12:00 UTC · ↺ Refresh

MX Hostnames

  • mail.congstar.de

MX Priorities

  • mail.congstar.de: 10

A / AAAA Records

  • 194.150.228.43 (no PTR)

Mail Server IPs

  • 194.150.228.233 ↩ mail.congstar.de

SOA Record

Raw SOA dns1.telekom.de dnsadmin.t-systems.com 368 10800 1800 604800 900
Primary NS (mname)
dns1.telekom.de
Admin Email (rname)
dnsadmin@t-systems.com
Serial
368
Refresh
10800s
Retry
1800s
Expire
604800s
Minimum TTL
900s

Nameservers (NS)

ns1.telekom.net
dns2.telekom.de
dns1.telekom.de
pns.dtag.de

SPF Record

✓ Soft Fail (~all)
v=spf1 mx include:_spf.salesforce.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; adkim=r; aspf=r; pct=1; rf=afrf; ri=86400;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
⚠ Policy applies to 1% of failing messages only

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

5 records
  • google-site-verification=tOPd1Kz05VB16KTw6eCDG_ok2T0zUDz0ELnhb-gRHsY
  • qv5g3l1kk9nbkrx0l92v4xdgdnv5dygy
  • vlz4d3svk32nlj1g8085wjs0tds8vpxs
  • google-site-verification=Fx5owvEeUOFaQP8gaJAijNTqAo5T0rD5gUGCV7XqU-A
  • SPFv=spf1 mx include:_spf.salesforce.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 congstar.de

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

No credit card required
Get 1,000 Free Credits