Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
psychologie.uni-heidelberg.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-07 14:03:33 UTC · ↺ Refresh
MX Hostnames
- relay3.uni-heidelberg.de
- relay.uni-heidelberg.de
- relay2.uni-heidelberg.de
MX Priorities
- relay2.uni-heidelberg.de: 10
- relay3.uni-heidelberg.de: 10
- relay.uni-heidelberg.de: 10
A / AAAA Records
- 147.142.240.253 ↩ verw253.psi.uni-heidelberg.de
Mail Server IPs
- 129.206.119.212 ↩ relay2.uni-heidelberg.de
- 129.206.100.213 ↩ relay3.uni-heidelberg.de
- 129.206.100.212 ↩ relay.uni-heidelberg.de
SOA Record
Raw SOA
dns.uni-heidelberg.de net-bugs.urz.uni-heidelberg.de 202603300 3600 600 2419200 3600
Primary NS (mname)
dns.uni-heidelberg.de
Admin Email (rname)
net-bugs@urz.uni-heidelberg.de
Serial
202603300
Refresh
3600s
Retry
600s
Expire
2419200s
Minimum TTL
3600s
Nameservers (NS)
dns2.uni-heidelberg.de
dns.uni-heidelberg.de
SPF Record
✓ Strict (-all)
v=spf1 ip4:129.206.100.212 ip4:129.206.119.212 ip4:129.206.100.213 -all
📊 DNS lookups: 0/10
✓ 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
1 record- SPFv=spf1 ip4:129.206.100.212 ip4:129.206.119.212 ip4:129.206.100.213 -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 psychologie.uni-heidelberg.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits