Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
commerzbuilding.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-24 13:32:03 UTC · ↺ Refresh
MX Hostnames
- commerzbank-com.mail.protection.outlook.com
- mail1.commerzbank.com
MX Priorities
- mail1.commerzbank.com: 20
- commerzbank-com.mail.protection.outlook.com: 10
A / AAAA Records
- 81.169.145.152 ↩ w98.rzone.de
- 2a01:238:20a:202:1152:: ↩ w98.rzone.de
Mail Server IPs
- 212.149.48.100 ↩ mail1.commerzbank.com
- 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 52.101.68.10 ↩ mail-dbbpr03cu00102.inbound.protection.outlook.com
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
- 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
SOA Record
Raw SOA
shades20.rzone.de hostmaster.strato-rz.de 2020051424 86400 7200 604800 300
Primary NS (mname)
shades20.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020051424
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s
Nameservers (NS)
shades20.rzone.de
docks17.rzone.de
SPF Record
✓ Strict (-all)
v=spf1 ip4:212.149.50.150 ip4:212.149.48.100 -all
📊 DNS lookups: 0/10
✓ 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
1 record- SPFv=spf1 ip4:212.149.50.150 ip4:212.149.48.100 -all
Full email verification for commerzbuilding.de
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits