Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
th.physik.uni-frankfurt.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-28 18:39:17 UTC · ↺ Refresh
MX Hostnames
- th.physik.uni-frankfurt.de
MX Priorities
- th.physik.uni-frankfurt.de: 10
A / AAAA Records
- 141.2.246.1 ↩ th.physik.uni-frankfurt.de
Mail Server IPs
- 141.2.246.1 ↩ th.physik.uni-frankfurt.de
SOA Record
Raw SOA
th.physik.uni-frankfurt.de hostmaster.th.physik.uni-frankfurt.de 2026031700 10800 1800 1209600 3600
Primary NS (mname)
th.physik.uni-frankfurt.de
Admin Email (rname)
hostmaster@th.physik.uni-frankfurt.de
Serial
2026031700
Refresh
10800s
Retry
1800s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
wattdenn.rz.uni-frankfurt.de
chaplin.rz.uni-frankfurt.de
dns-2.dfn.de
th.physik.uni-frankfurt.de
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx ip4:141.2.36.230 ip4:141.2.22.115 ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
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 a mx ip4:141.2.36.230 ip4:141.2.22.115 ~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 th.physik.uni-frankfurt.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits