Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rheinkalk.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 16:08:47 UTC · ↺ Refresh
MX Hostnames
- rheinkalk-de.mail.protection.outlook.com
MX Priorities
- rheinkalk-de.mail.protection.outlook.com: 5
A / AAAA Records
- 217.19.237.54 ↩ 217.19.237.54.static.hosted.by.combell.com
Mail Server IPs
- 52.101.73.28 ↩ mail-am7pr05cu00204.inbound.protection.outlook.com
- 52.101.73.2 ↩ mail-as9pr07cu00302.inbound.protection.outlook.com
- 52.101.73.30 ↩ mail-am7pr05cu00306.inbound.protection.outlook.com
- 52.101.68.0 ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::c ↩ mail-as8pr05cu00304.inbound.protection.outlook.com
- 2a01:111:f403:ca04::5 ↩ mail-db3pr0202cu00205.inbound.protection.outlook.com
- 2a01:111:f403:ca09::2 ↩ mail-am0pr83cu00402.inbound.protection.outlook.com
- 2a01:111:f403:ca09::1 ↩ mail-as9pr07cu00301.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.register.be info.register.be 1720535322 7200 3600 86400 3600
Primary NS (mname)
ns1.register.be
Admin Email (rname)
info@register.be
Serial
1720535322
Refresh
7200s
Retry
3600s
Expire
86400s
Minimum TTL
3600s
Nameservers (NS)
ns2.register.be
ns3.register.be
ns1.register.be
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; sp=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; rf=afrf; pct=100; ri=86400; fo=1
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: reject
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- MS=ms42166292
- SPFv=spf1 include:spf.protection.outlook.com -all
- qqukPLFzqpxBQKCwI5ApTYessM6UDvG5Te2guW76LIAyt8hcnbXHXK8XsouV5KhxQ0wNevokgoq/UzIJbWTiiQ==
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