Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
mainka-bau.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-20 11:42:58 UTC · ↺ Refresh
MX Hostnames
- mx02.hornetsecurity.com
- mx01.hornetsecurity.com
- mx03.hornetsecurity.com
- mx04.hornetsecurity.com
MX Priorities
- mx04.hornetsecurity.com: 40
- mx01.hornetsecurity.com: 10
- mx03.hornetsecurity.com: 30
- mx02.hornetsecurity.com: 20
A / AAAA Records
- 178.16.57.102 ↩ r9849.agenturserver.it
Mail Server IPs
- 94.100.136.7 ↩ mx04.hornetsecurity.com
- 94.100.132.8 ↩ mx01.hornetsecurity.com
- 94.100.134.8 ↩ mx03.hornetsecurity.com
- 94.100.136.8 ↩ mx02.hornetsecurity.com
SOA Record
Raw SOA
ns01.agenturserver.de support.mittwald.de 1770820018 28800 7200 604800 3600
Primary NS (mname)
ns01.agenturserver.de
Admin Email (rname)
support@mittwald.de
Serial
1770820018
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns01.agenturserver.de
ns01.agenturserver.it
ns01.agenturserver.co
SPF Record
✓ Soft Fail (~all)
v=spf1 include:agenturserver.de include:spf.hornetsecurity.com include:spf.protection.outlook.com include:spf.crsend.com include:spf-de.emailsignatures365.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100; rua=mailto:[email protected],mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
8 records- MS=ms49802125
- facebook-domain-verification=vw8j2mgxw479dtaws6osojeobswhya
- atlassian-sending-domain-verification=80c90df9-8047-48b4-828c-a77df0f07f73
- apple-domain-verification=5eDi5ZhJ91B2u1Nd
- SPFv=spf1 include:agenturserver.de include:spf.hornetsecurity.com include:spf.protection.outlook.com include:spf.crsend.com include:spf-de.emailsignatures365.com ~all
- MS=5DBBBD0CD4E69095F520C465EC523BFAACAA0D21
- atlassian-domain-verification=KRXqLX5Wh3bKTyKYJ9/2h4AlfwZ2F1YIYi/Djvyvw7aZds8UsRbBz34cABJWMiQb
- 67259BD4-9A12-4B5F-BC59-4FEABF2DA864
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 mainka-bau.de
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits