Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
dr-hamacher.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-30 11:04:29 UTC · ↺ Refresh
MX Hostnames
- drhamacher-de0e.mail.protection.outlook.com
MX Priorities
- drhamacher-de0e.mail.protection.outlook.com: 0
A / AAAA Records
- 172.67.132.249 (no PTR)
- 104.21.5.48 (no PTR)
- 2606:4700:3037::ac43:84f9
- 2606:4700:3031::6815:530
Mail Server IPs
- 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
- 52.101.68.3 ↩ mail-db7pr03cu00403.inbound.protection.outlook.com
- 52.101.73.6 ↩ mail-am6pr04cu00306.inbound.protection.outlook.com
- 52.101.73.153 ↩ mail-as8pr05cu00401.inbound.protection.outlook.com
- 2a01:111:f403:ca04::6 ↩ mail-db4pr02cu00406.inbound.protection.outlook.com
- 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com
- 2a01:111:f403:ca04::4 ↩ mail-db4pr02cu00204.inbound.protection.outlook.com
- 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
SOA Record
Raw SOA
autumn.ns.cloudflare.com dns.cloudflare.com 2399745743 10000 2400 604800 1800
Primary NS (mname)
autumn.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399745743
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
quinton.ns.cloudflare.com
autumn.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com ip4:81.221.12.154 ip4:85.183.43.234 ip4:46.232.185.192/28 -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; sp=reject; fo=0:1:d:s; pct=100; adkim=s; aspf=s
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
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
3 records- SPFv=spf1 include:spf.protection.outlook.com ip4:81.221.12.154 ip4:85.183.43.234 ip4:46.232.185.192/28 -all
- MS=ms63189792
- google-site-verification=psfgqwfK5pd752tBZwibyCYJ_6uRqDMeU61fKiOV5-Y
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