sysbert.de

Valid Email Server
Domain Lookup › sysbert.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
sysbert.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-20 04:10:18 UTC · ↺ Refresh

MX Hostnames

  • securemx.dotplex.com

MX Priorities

  • securemx.dotplex.com: 10

A / AAAA Records

  • 185.231.124.31 ↩ web1.dotplex.com
  • 2a0c:5f00:1:11f:: ↩ web1.dotplex.com

Mail Server IPs

  • 185.231.124.50 ↩ 185-231-124-50.ipv4.dotplex.net
  • 2a0c:5f00:1:132:: (no PTR)

SOA Record

Raw SOA ns.domrobot.com tech.sysbert.de 2024051601 10800 3600 604800 3600
Primary NS (mname)
ns.domrobot.com
Admin Email (rname)
tech@sysbert.de
Serial
2024051601
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s

Nameservers (NS)

ns.domrobot.org
ns.domrobot.net
ns.domrobot.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.mail.dotplex.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 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

2 records
  • google-site-verification=JskFfhAPZzgA-t7hu1Vx435FkOAW9Tuzy_rBOAdafV4
  • SPFv=spf1 include:_spf.mail.dotplex.com ~all
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