christoph-mueller-bau.de

Valid Email Server
Domain Lookup › christoph-mueller-bau.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
christoph-mueller-bau.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-25 11:15:53 UTC · ↺ Refresh

MX Hostnames

  • mail.arltnet.de

MX Priorities

  • mail.arltnet.de: 10

A / AAAA Records

  • 185.184.215.74 ↩ mars.arltnet.com

Mail Server IPs

  • 185.184.215.75 ↩ mail.arltnet.de
  • 2a02:238:f031:a::75 ↩ mail.arltnet.com

SOA Record

Raw SOA ns.arltnet.de support.arltnet.de 2022012104 7200 1800 604800 3600
Primary NS (mname)
ns.arltnet.de
Admin Email (rname)
support@arltnet.de
Serial
2022012104
Refresh
7200s
Retry
1800s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns.arltnet.de
ns2.arltnet.de

SPF Record

✓ Strict (-all)
v=spf1 mx ip4:185.184.215.74 ip4:185.184.215.75 ip4:212.78.110.0/24 ip4:212.78.113.0/24 ip4:212.78.102.0/24 ip4:212.78.108.0/24 ip4:209.250.247.225 ip6:2a00:1d08:1010:2::6 ip6:2001:19f0:5001:68f:5400:1ff:fe52:7a5f include:spf.protection.outlook.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

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

2 records
  • MS=ms98838600
  • SPFv=spf1 mx ip4:185.184.215.74 ip4:185.184.215.75 ip4:212.78.110.0/24 ip4:212.78.113.0/24 ip4:212.78.102.0/24 ip4:212.78.108.0/24 ip4:209.250.247.225 ip6:2a00:1d08:1010:2::6 ip6:2001:19f0:5001:68f:5400:1ff:fe52:7a5f include:spf.protection.outlook.com -all
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