Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sicherheitsdienst-gmbh.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 19:30:03 UTC · ↺ Refresh
MX Hostnames
- mail.sicherheitsdienst-gmbh.de
MX Priorities
- mail.sicherheitsdienst-gmbh.de: 10
A / AAAA Records
- 193.9.117.130 ↩ ac.rz-nbg.de
Mail Server IPs
- 85.236.52.213 ↩ securemail3.nathus.com
SOA Record
Raw SOA
a.ns14.net hostmaster.der-webpartner.de 2026010402 40000 7200 604800 300
Primary NS (mname)
a.ns14.net
Admin Email (rname)
hostmaster@der-webpartner.de
Serial
2026010402
Refresh
40000s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
b.ns14.net
a.ns14.net
c.ns14.net
d.ns14.net
SPF Record
✓ Strict (-all)
v=spf1 mx a include:spfserver.auctores.de include:_spf-e.cegedim.fr include:_spf-i.cegedim.fr ip4:84.39.67.230 -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 mx a include:spfserver.auctores.de include:_spf-e.cegedim.fr include:_spf-i.cegedim.fr ip4:84.39.67.230 -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 · Customize →
See demo & docs
Deep verification
Full email verification for sicherheitsdienst-gmbh.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits