krzbb.de

Valid Email Server
Domain Lookup › krzbb.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
krzbb.de
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-26 04:07:29 UTC · ↺ Refresh

MX Hostnames

  • krzbb-de.mail.protection.outlook.com

MX Priorities

  • krzbb-de.mail.protection.outlook.com: 10

A / AAAA Records

  • 208.82.75.154 ↩ lb-sir-rewrite.dns.boreus.de

Mail Server IPs

  • 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
  • 52.101.68.8 ↩ mail-du0pr03cu00100.inbound.protection.outlook.com
  • 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
  • 52.101.68.39 ↩ mail-db7pr03cu00607.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::9 ↩ mail-db7pr03cu00601.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
  • 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com

SOA Record

Raw SOA a.ns14.net do-not-reply.krzbb.de 2026010930 43200 7200 1209600 86400
Primary NS (mname)
a.ns14.net
Admin Email (rname)
do-not-reply@krzbb.de
Serial
2026010930
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

c.ns14.net
d.ns14.net
a.ns14.net
b.ns14.net

SPF Record

✓ Strict (-all)
v=spf1 ip6:2603:10a6:f10:11::11 include:amazonses.com include:spf.protection.outlook.com include:spf.swmh.de include:spf.contribute.de a:kopano.krzbb.de include:spf.msh.de -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

6 records
  • google-site-verification=mP26t92U2HbAE4_0i7uu9F8MFUf5IaRMJaG9368tOKM
  • google-site-verification=dGOS4jEuvS6VPpNLi6CPmI3mrtTXrCja2yOBQLB9sVc
  • MS=ms22599729
  • google-site-verification=JD5VStEnu0eCw9n4Ct2YDFFitVo12KWIIsvNG7Adayc
  • atlassian-domain-verification=LmhbOFlPaFZGD6QBkVhcQgaAZnNJpu6TSN/ooZ4Uz4oSRysmViCxBklmtqGxhgtD
  • SPFv=spf1 ip6:2603:10a6:f10:11::11 include:amazonses.com include:spf.protection.outlook.com include:spf.swmh.de include:spf.contribute.de a:kopano.krzbb.de include:spf.msh.de -all
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