cdu-lingen.de

Valid Email Server
Domain Lookup › cdu-lingen.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
cdu-lingen.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-21 17:04:08 UTC · ↺ Refresh

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MX Hostnames

  • cdu-lingen.de.2.0001.arsmtp.com
  • cdu-lingen.de.1.0001.arsmtp.com

MX Priorities

  • cdu-lingen.de.2.0001.arsmtp.com: 20
  • cdu-lingen.de.1.0001.arsmtp.com: 10

A / AAAA Records

  • 92.205.130.59 ↩ 59.130.205.92.host.secureserver.net

Mail Server IPs

  • 5.152.188.52 ↩ server401.appriver.com
  • 5.152.185.140 ↩ server400.appriver.com

SOA Record

Raw SOA dns01.ipconn.de hostmaster.connectiv.de 2025123001 86400 3600 777600 3600
Primary NS (mname)
dns01.ipconn.de
Admin Email (rname)
hostmaster@connectiv.de
Serial
2025123001
Refresh
86400s
Retry
3600s
Expire
777600s
Minimum TTL
3600s

Nameservers (NS)

dns02.ipconn.de
dns01.ipconn.de

SPF Record

✓ Strict (-all)
v=spf1 a mx a:mailer12.ipconn.de ip4:217.6.129.26/32 ip4:83.169.42.164 include:appriver.com include:secureserver.net -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict 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

2 records
  • {04F364DC-F2D3-4285-9F74-FC87230B6759}
  • SPFv=spf1 a mx a:mailer12.ipconn.de ip4:217.6.129.26/32 ip4:83.169.42.164 include:appriver.com include:secureserver.net -all
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