Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gundlach-bau.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-17 23:48:07 UTC · ↺ Refresh
MX Hostnames
- azmail.gundlach-bau.de
MX Priorities
- azmail.gundlach-bau.de: 10
A / AAAA Records
- 91.132.145.47 ↩ v120190810131294315.yourpserver.net
Mail Server IPs
- 20.52.220.112 ↩ azmail.gundlach-bau.de
SOA Record
Raw SOA
ns1-01.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-01.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns3-01.azure-dns.org
ns4-01.azure-dns.info
ns1-01.azure-dns.com
ns2-01.azure-dns.net
SPF Record
✓ Strict (-all)
v=spf1 a mx include:spf.protection.outlook.com include:spf.emailsignatures365.com include:_spf.psm.knowbe4.com include:spf.crsend.com include:_spf.proxy.nospamproxy.com ip4:172.246.45.113 -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict 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
✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
8 records- globalsign-domain-verification=eu8emJ3Rfh6lGH_2PqB_ZBzjHXWX9-lqRK16Cf6iEV
- SPFv=spf1 a mx include:spf.protection.outlook.com include:spf.emailsignatures365.com include:_spf.psm.knowbe4.com include:spf.crsend.com include:_spf.proxy.nospamproxy.com ip4:172.246.45.113 -all
- hUdz/BfVfCCLTU51JH4HPpRfknWUXttr9BuHPbLoTZAnZSvqu7vFG6YTOrg7p+eP22HwaNmlOuUFQ2KQfD7vlA==
- MS=ms77524389
- cisco-ci-domain-verification=803e276c832c509b2d7f5ae92472af3bbe34b5d75773dd8363278b2a502e96b
- apple-domain-verification=e4bwSql8kjm0D5n3
- google-site-verification=nPe9oybHc43JbHkEFpyD8OrcioLY2DRB0bhKRjBxFws
- brevo-code:6742a3ec0ac6cf04de17e3a626d92846
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