Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
canisiuscampus.de
Yes
✓ Yes
Barracuda
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-03 17:04:14 UTC · ↺ Refresh
MX Hostnames
- d315042.a.ess.de.barracudanetworks.com
- d315042.b.ess.de.barracudanetworks.com
MX Priorities
- d315042.b.ess.de.barracudanetworks.com: 20
- d315042.a.ess.de.barracudanetworks.com: 10
A / AAAA Records
- 81.209.171.20 (no PTR)
Mail Server IPs
- 18.185.115.250 ↩ mail.ess.de.barracuda.com
- 18.185.115.251 ↩ mail.ess.de.barracuda.com
- 18.185.115.252 ↩ mail.ess.de.barracuda.com
SOA Record
Raw SOA
ns01.netgroup.de dns.netgroup.de 2022060901 28800 3600 604800 86400
Primary NS (mname)
ns01.netgroup.de
Admin Email (rname)
dns@netgroup.de
Serial
2022060901
Refresh
28800s
Retry
3600s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
ns01.netgroup.de
ns02.netgroup.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.ess.de.barracudanetworks.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo 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
3 records- REDDCRYPT=5f92b5cc0c568c00011cad10
- SPFv=spf1 include:spf.protection.outlook.com include:spf.ess.de.barracudanetworks.com -all
- MS=330720285585082C7857F5AE31C7D0DF9C22B8A4
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 canisiuscampus.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits