Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
ibs-bremen.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-29 15:03:57 UTC · ↺ Refresh
MX Hostnames
- mx01.hornetsecurity.com
- mx04.hornetsecurity.com
- mx03.hornetsecurity.com
- mx02.hornetsecurity.com
MX Priorities
- mx04.hornetsecurity.com: 40
- mx01.hornetsecurity.com: 10
- mx02.hornetsecurity.com: 20
- mx03.hornetsecurity.com: 30
A / AAAA Records
- 188.40.29.201 ↩ dedi3201.your-server.de
Mail Server IPs
- 94.100.136.7 ↩ mx04.hornetsecurity.com
- 94.100.132.8 ↩ mx01.hornetsecurity.com
- 94.100.136.8 ↩ mx02.hornetsecurity.com
- 94.100.134.8 ↩ mx03.hornetsecurity.com
SOA Record
Raw SOA
ns1.your-server.de postmaster.your-server.de 2026011700 86400 1800 3600000 86400
Primary NS (mname)
ns1.your-server.de
Admin Email (rname)
postmaster@your-server.de
Serial
2026011700
Refresh
86400s
Retry
1800s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
ns15.your-server.de
ns.second-ns.de
SPF Record
✓ Strict (-all)
v=spf1 mx a ip4:144.76.160.0/24 ip4:46.19.95.147 ip4:185.131.120.24 a:mail.hier-online-lernen.de a:smtp.ibs-bremen.de a:mail.ibs-bremen.de include:spf.12systems.de include:spf-de.emailsignatures365.com include:spf.hornetsecurity.com -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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
10 records- google-site-verification=ynpsjB7kb2vRzO9TZE9GjP_WEsvv-43YbEwdivazPfQ
- hdbxfg2j1bhydm2gr4cn96bhwjrp2f8z
- kxwl2tykxs7xsctbjq66w6yqlmdq3j3x
- y9dhtqx0tfg512fws3pd2f2gfjqq4cnw
- SPFv=spf1 mx a ip4:144.76.160.0/24 ip4:46.19.95.147 ip4:185.131.120.24 a:mail.hier-online-lernen.de a:smtp.ibs-bremen.de a:mail.ibs-bremen.de include:spf.12systems.de include:spf-de.emailsignatures365.com include:spf.hornetsecurity.com -all
- 95hcmd1pfqj1d2np6pjwt6qn26ry852d
- MS=ms27331372
- _dji2zr1ievuc1z3jwofu7co9t0pa5az
- dtqcgy4wccxk2dsgx54kh3d8409b34x2
- google-site-verification=aPc2XbJ_MY3xUEyTb_wYdLlhrY1Zuy-E_mG9LNXG3mM
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