Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gbb.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-28 17:22:35 UTC · ↺ Refresh
MX Hostnames
- gbb-de.mail.protection.outlook.com
MX Priorities
- gbb-de.mail.protection.outlook.com: 10
A / AAAA Records
- 109.234.218.133 ↩ mona.kundenserver42.de
Mail Server IPs
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.73.24 ↩ mail-as8pr05cu00300.inbound.protection.outlook.com
- 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
- 2a01:111:f403:ca04::7 ↩ mail-db4pr02cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
- 2a01:111:f403:ca09::c ↩ mail-as8pr05cu00304.inbound.protection.outlook.com
SOA Record
Raw SOA
dns.dns1.de hostmaster.partnergate.com 2026010701 28800 7200 604800 86400
Primary NS (mname)
dns.dns1.de
Admin Email (rname)
hostmaster@partnergate.com
Serial
2026010701
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
dns.dns3.de
dns.dns2.de
dns.dns4.de
dns.dns1.de
SPF Record
✓ Soft Fail (~all)
v=spf1 a mx include:spf.protection.outlook.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; adkim=s; aspf=s; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
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- gT36nivFedVNiN6BlFuJ0BRuwK4hvyC+OJeq2s+u1qImvbv+WHTNV7i9Q1HdBfWmSvtyQrW2cVbhFvH89YlyRQ==
- SPFv=spf1 a mx include:spf.protection.outlook.com ~all
Full email verification for gbb.de
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