rsost.de

Valid Email Server
Domain Lookup › rsost.de

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
rsost.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-04-01 06:07:23 UTC · ↺ Refresh

MX Hostnames

  • mail.neu-itec.de

MX Priorities

  • mail.neu-itec.de: 0

A / AAAA Records

No A/AAAA records found.

Mail Server IPs

  • 185.152.104.8 ↩ mail.neu-itec.de

SOA Record

Raw SOA ns3.nsentry.de hostmaster.rsost.de 2017013000 86400 7200 3600000 172800
Primary NS (mname)
ns3.nsentry.de
Admin Email (rname)
hostmaster@rsost.de
Serial
2017013000
Refresh
86400s
Retry
7200s
Expire
3600000s
Minimum TTL
172800s

Nameservers (NS)

ns3.nsentry.de
ns4.nsentry.de

SPF Record

✓ Strict (-all)
v=spf1 mx -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; pct=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
⚠ Policy applies to 1% of failing messages only

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

1 record
  • SPFv=spf1 mx -all
Full email verification for rsost.de

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits