osup.de

Valid Email Server
Domain Lookup › osup.de
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
osup.de
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-09-04 18:26:42 UTC · ↺ Refresh

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MX Hostnames

  • mailserver.servernetz.biz

MX Priorities

  • mailserver.servernetz.biz: 1

A / AAAA Records

  • 116.202.159.186 ↩ static.186.159.202.116.clients.your-server.de
  • 2a01:4f8:231:3e1a::108 (no PTR)

Mail Server IPs

  • 116.202.159.184 ↩ mailserver.servernetz.biz
  • 2a01:4f8:231:3e1a::113 ↩ mailserver.servernetz.biz

SOA Record

Raw SOA dns103.ovh.net tech.ovh.net 2087076188 86400 3600 3600000 300
Primary NS (mname)
dns103.ovh.net
Admin Email (rname)
tech@ovh.net
Serial
2087076188
Refresh
86400s
Retry
3600s
Expire
3600000s
Minimum TTL
300s

Nameservers (NS)

ns103.ovh.net
dns103.ovh.net

SPF Record

✓ Strict (-all)
v=spf1 a mx ip4:148.251.187.217 ip6:2a01:4f8:211:962::5 -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
dkim._domainkey
✓ Public key: 736 chars (valid)
✓ DKIM properly configured for selector: dkim

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

3 records
  • SPFv=spf1 a mx ip4:148.251.187.217 ip6:2a01:4f8:211:962::5 -all
  • 5e11fc4396fd0c8812b8a761a958d6ff1f141ed6
  • google-site-verification=CNw0_XQKyv8249-jAxptms6uCneyP5d9L85laWv-zuI
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