gsdb.de

Valid Email Server
Domain Lookup › gsdb.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
gsdb.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-28 17:08:48 UTC · ↺ Refresh

MX Hostnames

  • gsdb-de.mail.protection.outlook.com

MX Priorities

  • gsdb-de.mail.protection.outlook.com: 0

A / AAAA Records

  • 92.205.53.221 ↩ sh20219.ispgateway.de
  • 2a00:1169:103:1170:: ↩ sh20219.ispgateway.de

Mail Server IPs

  • 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
  • 52.101.73.1 ↩ mail-am3pr04cu00501.inbound.protection.outlook.com
  • 52.101.73.16 ↩ mail-as2pr05cu00100.inbound.protection.outlook.com
  • 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::5 ↩ mail-am1pr04cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::e ↩ mail-am7pr05cu00206.inbound.protection.outlook.com

SOA Record

Raw SOA ns81.domaincontrol.com dns.jomax.net 2026012703 28800 7200 604800 600
Primary NS (mname)
ns81.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026012703
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns81.domaincontrol.com
ns82.domaincontrol.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com include:mailgun.org -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 3 found
selector1._domainkey
selector2._domainkey
k1._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

3 records
  • google-site-verification=uR0olLBVXFq9n5zIJIUHyLfza8KyNBWpEv-zAYIBAzM
  • google-site-verification=CVccijfMGZDoq4cgTJIhHkvzx5yQL6HshCrRsbtv5Hw
  • SPFv=spf1 include:spf.protection.outlook.com include:spf-de.emailsignatures365.com include:mailgun.org -all
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