crs-online.de

Valid Email Server
Domain Lookup › crs-online.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
crs-online.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-28 21:43:37 UTC · ↺ Refresh

MX Hostnames

  • mail2.crs-online.de
  • mail.crs-online.de

MX Priorities

  • mail.crs-online.de: 10
  • mail2.crs-online.de: 100

A / AAAA Records

  • 81.169.145.86 ↩ w86.rzone.de
  • 2a01:238:20a:202:1086:: ↩ w86.rzone.de

Mail Server IPs

  • 80.83.99.128 (no PTR)
  • 62.246.77.107 (no PTR)

SOA Record

Raw SOA shades05.rzone.de hostmaster.strato-rz.de 2020051859 86400 7200 604800 300
Primary NS (mname)
shades05.rzone.de
Admin Email (rname)
hostmaster@strato-rz.de
Serial
2020051859
Refresh
86400s
Retry
7200s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

docks08.rzone.de
shades05.rzone.de

SPF Record

✓ Soft Fail (~all)
v=spf1 mx a ip4:80.83.99.128 ip4:62.246.77.107 include:mail.crs-online.de include:mail2.crs-online.de include:spf.nl2go.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✓ Reject
v=DMARC1;p=reject;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)

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

4 records
  • CBeSfIK3/AYCO7bLmlJNdidimRkI9j+R4Xm3NkFtOx6lZwfXbK0mgDkZEw4vPKu2EOkcFMhU1N+fC2/INBs3ZA==
  • SPFv=spf1 mx a ip4:80.83.99.128 ip4:62.246.77.107 include:mail.crs-online.de include:mail2.crs-online.de include:spf.nl2go.com ~all
  • DKIMv=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCeiI1jk3MmWX5I0F+dT+SHvS4rsY1PGJV1iokAN07r9+4eb3bscJBPz0HAbKqRYJjDBBwh8t1I3MQoz175A4KNir/F9RV1djGDMJ/EYsp6MzzO1yiMuywMYezilBfRI6UslYH7yRkVMPL3G4GJMPBLQsUOdeb95zRv51mbTLOX+QIDAQAB;
  • MS=ms42359672
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