blak.de

Valid Email Server
Domain Lookup › blak.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
blak.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-04-01 15:21:34 UTC · ↺ Refresh

MX Hostnames

  • mail.blak.de

MX Priorities

  • mail.blak.de: 100

A / AAAA Records

  • 185.236.252.152 (no PTR)

Mail Server IPs

  • 88.217.137.205 ↩ mail.blak.de

SOA Record

Raw SOA dns.dgn.de hostmaster.dgn.de 2026031002 86400 7200 3600000 86400
Primary NS (mname)
dns.dgn.de
Admin Email (rname)
hostmaster@dgn.de
Serial
2026031002
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
86400s

Nameservers (NS)

secondary006.dtag.net
pns.dtag.de

SPF Record

✓ Strict (-all)
v=spf1 a mx ip4:185.236.252.0/23 ip4:62.154.230.0/24 ip4:88.217.137.205/32 include:_spf.retarus.com include:_spf.eventmaker.at include:spf.protection.outlook.com a:www.fortbildung-blak.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

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

3 records
  • swisssign-check=q4XO4ulbivaHPzrGFGtaNmLQlms
  • SPFv=spf1 a mx ip4:185.236.252.0/23 ip4:62.154.230.0/24 ip4:88.217.137.205/32 include:_spf.retarus.com include:_spf.eventmaker.at include:spf.protection.outlook.com a:www.fortbildung-blak.de -all
  • MS=ms42221862
Full email verification for blak.de

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits