Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
caspar-demuth.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-21 14:10:54 UTC · ↺ Refresh
MX Hostnames
- caspardemuth-de01e.mail.protection.outlook.com
MX Priorities
No priority data.
A / AAAA Records
- 217.160.0.174
Mail Server IPs
No IPs resolved.
SOA Record
No SOA record found.
Nameservers (NS)
ns1099.ui-dns.de
ns1099.ui-dns.org
ns1099.ui-dns.com
ns1099.ui-dns.biz
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com a:smtprelay01.ispgateway.de a:smtprelay02.ispgateway.de a:smtprelay03.ispgateway.de a:smtprelay04.ispgateway.de a:smtprelay05.ispgateway.de a:smtprelay06.ispgateway.de a:smtprelay07.ispgateway.de a:smtprelay08.ispgateway.de a:smtprelay09.ispgateway.de -all
📊 DNS lookups: 10/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;sp=reject;pct=100
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: reject
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
2 records- SPFv=spf1 include:spf.protection.outlook.com a:smtprelay01.ispgateway.de a:smtprelay02.ispgateway.de a:smtprelay03.ispgateway.de a:smtprelay04.ispgateway.de a:smtprelay05.ispgateway.de a:smtprelay06.ispgateway.de a:smtprelay07.ispgateway.de a:smtprelay08.ispgateway.de a:smtprelay09.ispgateway.de -all
- MS=ms85449145
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 caspar-demuth.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits