sts.de

Valid Email Server
Domain Lookup › sts.de

Domain Overview

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

Checked via [email protected] · 2026-04-02 05:06:14 UTC · ↺ Refresh

MX Hostnames

  • sts-de.mail.protection.outlook.com

MX Priorities

  • sts-de.mail.protection.outlook.com: 0

A / AAAA Records

  • 85.215.232.161 ↩ ip85-215-232-161.pbiaas.com

Mail Server IPs

  • 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
  • 52.101.68.18 ↩ mail-db4pr02cu00302.inbound.protection.outlook.com
  • 52.101.73.22 ↩ mail-am7pr05cu00106.inbound.protection.outlook.com
  • 52.101.68.5 ↩ mail-du2pr03cu00105.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::10 ↩ mail-dbapr03cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca09:: ↩ mail-am3pr04cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca04::a ↩ mail-du0pr03cu00102.inbound.protection.outlook.com
  • 2a01:111:f403:ca09::f ↩ mail-am7pr05cu00307.inbound.protection.outlook.com

SOA Record

Raw SOA ns1057.ui-dns.org hostmaster.1und1.com 2017060253 28800 7200 604800 600
Primary NS (mname)
ns1057.ui-dns.org
Admin Email (rname)
hostmaster@1und1.com
Serial
2017060253
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s

Nameservers (NS)

ns1057.ui-dns.com
ns1095.ui-dns.de
ns1057.ui-dns.org
ns1038.ui-dns.biz

SPF Record

✓ Strict (-all)
v=spf1 ip4:92.50.103.138 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1

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

All TXT Records

3 records
  • v=verifydomain MS=1552158
  • SPFv=spf1 ip4:92.50.103.138 include:spf.protection.outlook.com -all
  • MS=ms20244183
Full email verification for sts.de

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