calucon.de

Valid Email Server
Domain Lookup › calucon.de

Domain Overview

DNS: ✓ 1mo ago Checker: ✓ 1mo ago
calucon.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-06 14:37:17 UTC · ↺ Refresh

MX Hostnames

  • mail.protonmail.ch
  • mailsec.protonmail.ch

MX Priorities

  • mail.protonmail.ch: 10
  • mailsec.protonmail.ch: 20

A / AAAA Records

  • 104.21.95.221 (no PTR)
  • 172.67.148.173 (no PTR)
  • 2606:4700:3030::ac43:94ad (no PTR)
  • 2606:4700:3035::6815:5fdd (no PTR)

Mail Server IPs

  • 185.205.70.128 ↩ mail.protonmail.ch
  • 185.70.42.128 ↩ mail.protonmail.ch
  • 176.119.200.128 ↩ mail.protonmail.ch
  • 185.205.70.129 ↩ mailsec.protonmail.ch
  • 176.119.200.129 ↩ mailsec.protonmail.ch
  • 185.70.42.129 ↩ mailsec.protonmail.ch

SOA Record

Raw SOA cass.ns.cloudflare.com dns.cloudflare.com 2400450506 10000 2400 604800 1800
Primary NS (mname)
cass.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400450506
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s

Nameservers (NS)

west.ns.cloudflare.com
cass.ns.cloudflare.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.protonmail.ch mx ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rf=afrf; pct=100; ri=86400; rua=mailto:[email protected]; ruf=mailto:[email protected]; adkim=s; aspf=s
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict · DKIM alignment: Strict
📧 Reports → mailto:[email protected]

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

5 records
  • keybase-site-verification=TaSqU1wwSCiRM-4XhIZK3lnyh0796ysGwHtRT8MEf4w
  • protonmail-verification=e1813ad7e2ad97f4c489d19eaa8cb0e6720175c8
  • SPFv=spf1 include:_spf.protonmail.ch mx ~all
  • brave-ledger-verification=0169bf83ec531c0ed143e5470b109bee3c7b7d7a93e0a48a0ada6cf97a601d0b
  • google-site-verification=-MutR2to0ISRWfoePGuLsKadPGt6KkA5k1ragkeYg6Q
Full email verification for calucon.de

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