Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
zech-bau-holding.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 20:45:51 UTC · ↺ Refresh
MX Hostnames
- zechbauholding-de01bb.mail.protection.outlook.com
MX Priorities
- zechbauholding-de01bb.mail.protection.outlook.com: 0
A / AAAA Records
- 31.24.145.37 ↩ p01.zechbau.hosting.plutex.de
Mail Server IPs
- 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
- 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
- 2a01:111:f403:ca09::4 ↩ mail-am0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:ca04::c ↩ mail-db9pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca04::e ↩ mail-db8pr02cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.plutex.de support\.zechgroup.webmen.de 2025051401 300 300 604800 300
Primary NS (mname)
ns1.plutex.de
Admin Email (rname)
support\@zechgroup.webmen.de
Serial
2025051401
Refresh
300s
Retry
300s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
ns3.plutex.de
ns2.plutex.de
ns1.plutex.de
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:spf.myzechit.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → 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
3 records- lYOtkUYqUofcnghPgrTEKgW+n4Vulvwlsbz8E5yKZt7QNOKfcUpoEAXJFY608uIbTlC67fDXN5uhadmdeSd4HA==
- SPFv=spf1 include:spf.protection.outlook.com include:spf.myzechit.com -all
- MS=ms14866946
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