Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
birkenhauer.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-01 00:03:45 UTC · ↺ Refresh
MX Hostnames
- david.birkenhauer.net
- mx.birkenhauer.de
- mforward.dtag.de
MX Priorities
- mx.birkenhauer.de: 20
- david.birkenhauer.net: 10
- mforward.dtag.de: 30
A / AAAA Records
- 195.8.230.154 (no PTR)
Mail Server IPs
- 195.8.230.135 ↩ mx-01.birkenhauer.de
- 195.8.230.131 ↩ david.birkenhauer.net
- 194.25.242.123 ↩ mforward.dtag.de
SOA Record
Raw SOA
dns1.birkenhauer.de info.birkenhauer.de 2017110873 86400 7200 604800 3600
Primary NS (mname)
dns1.birkenhauer.de
Admin Email (rname)
info@birkenhauer.de
Serial
2017110873
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
dns1.birkenhauer.de
pns.dtag.de
SPF Record
✓ Soft Fail (~all)
v=spf1 mx ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; adkim=s; aspf=s; fo=0:1;
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
dkim._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 mx ~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 birkenhauer.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits