Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
thelen.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 02:56:03 UTC · ↺ Refresh
MX Hostnames
- mx-02-eu-central-1.prod.hydra.sophos.com
- mx-01-eu-central-1.prod.hydra.sophos.com
MX Priorities
- mx-01-eu-central-1.prod.hydra.sophos.com: 10
- mx-02-eu-central-1.prod.hydra.sophos.com: 10
A / AAAA Records
- 217.160.0.216 ↩ 217-160-0-216.elastic-ssl.ui-r.com
Mail Server IPs
- 52.57.79.230 ↩ ec2-52-57-79-230.eu-central-1.compute.amazonaws.com
- 18.159.237.67 ↩ ec2-18-159-237-67.eu-central-1.compute.amazonaws.com
SOA Record
Raw SOA
ns1036.ui-dns.de hostmaster.schlund.de 2017032123 28800 7200 604800 300
Primary NS (mname)
ns1036.ui-dns.de
Admin Email (rname)
hostmaster@schlund.de
Serial
2017032123
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns1036.ui-dns.biz
ns1036.ui-dns.org
ns1036.ui-dns.de
ns1036.ui-dns.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.nl2go.com include:spf-de.emailsignatures365.com include:_spf_eucentral1.prod.hydra.sophos.com ip4:80.156.14.59 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._domainkey
✓ Public key: 392 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
7 records- brevo-code:00ecd648924098bba701dce3deba8360
- SPFv=spf1 include:spf.protection.outlook.com include:spf.nl2go.com include:spf-de.emailsignatures365.com include:_spf_eucentral1.prod.hydra.sophos.com ip4:80.156.14.59 -all
- apple-domain-verification=X2KDBteeICsv5QOI
- google-site-verification=uRP8Xb4EdLbG8MtYcTmn3-OWeCnptvNXCE3lYEjCj1I
- sophos-domain-verification=2bf258c19c287626e46843affe95217daa481291d971103b10fb299ebfbabbac
- sophos-domain-verification=460e3d05e3dc5659452c3ab33681b56a71162a6b
- MS=ms57262401
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 thelen.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits