Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
atz-bremen.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 15:25:49 UTC · ↺ Refresh
MX Hostnames
- atz-bremen-de.gate.seppmail.cloud
MX Priorities
- atz-bremen-de.gate.seppmail.cloud: 10
A / AAAA Records
- 83.171.238.205 ↩ 545.cluster-nbg1.de
Mail Server IPs
- 167.233.8.136 ↩ gate.de.seppmail.cloud
- 49.12.23.112 ↩ gate.de.seppmail.cloud
- 2a01:4f8:1c1d:6b8::1 ↩ gate.de.seppmail.cloud
- 2a01:4f8:c011:544::1 ↩ gate.de.seppmail.cloud
SOA Record
Raw SOA
ns1125.ui-dns.biz hostmaster.1und1.com 2017060139 28800 7200 604800 600
Primary NS (mname)
ns1125.ui-dns.biz
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060139
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns1026.ui-dns.de
ns1102.ui-dns.org
ns1125.ui-dns.biz
ns1078.ui-dns.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_spf.de.seppmail.cloud -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
default._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
2 records- swisssign-check=p-KLKyCngUy0QeiTmbUD_tGmNCQ
- SPFv=spf1 include:spf.protection.outlook.com include:_spf.de.seppmail.cloud -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 atz-bremen.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits