sts-uk.com

Valid Email Server
Domain Lookup › sts-uk.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
sts-uk.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-26 23:39:13 UTC · ↺ Refresh

MX Hostnames

  • stsuk-com0i.mail.protection.outlook.com

MX Priorities

  • stsuk-com0i.mail.protection.outlook.com: 0

A / AAAA Records

  • 185.151.30.182 ↩ 185-151-30-182.ptr4.stackcp.net
  • 2a07:7800::182 (no PTR)

Mail Server IPs

  • 52.101.89.0 ↩ mail-lo2p265cu02300.inbound.protection.outlook.com
  • 52.101.99.2 ↩ mail-cwxp265cu00502.inbound.protection.outlook.com
  • 52.101.99.0 ↩ mail-cwxp265cu00600.inbound.protection.outlook.com
  • 52.101.89.1 ↩ mail-lo0p265cu00201.inbound.protection.outlook.com
  • 2a01:111:f403:ca1a::1 ↩ mail-cwxp265cu00601.inbound.protection.outlook.com
  • 2a01:111:f403:ca0b::2 ↩ mail-lo0p265cu00202.inbound.protection.outlook.com
  • 2a01:111:f403:ca1a:: ↩ mail-cwxp265cu00500.inbound.protection.outlook.com
  • 2a01:111:f403:ca0b::1 ↩ mail-lo3p265cu00301.inbound.protection.outlook.com

SOA Record

Raw SOA ns.mainnameserver.com hostmaster.mainnameserver.com 2024100866 10800 600 2419200 3600
Primary NS (mname)
ns.mainnameserver.com
Admin Email (rname)
hostmaster@mainnameserver.com
Serial
2024100866
Refresh
10800s
Retry
600s
Expire
2419200s
Minimum TTL
3600s

Nameservers (NS)

ns2.mainnameserver.com
ns.mainnameserver.com

SPF Record

✓ Strict (-all)
v=spf1 ip4:213.129.71.30 ip4:78.129.161.137 ip4:176.65.67.55 ip4:185.99.77.182 ip4:185.249.215.238 include:spf.mtaroutes.com include:spf.everycloudtech.com include:spf.protection.outlook.com include:spf.mandrillapp.com -all
📊 DNS lookups: 4/10
✓ 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: 392 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

4 records
  • SPFv=spf1 ip4:213.129.71.30 ip4:78.129.161.137 ip4:176.65.67.55 ip4:185.99.77.182 ip4:185.249.215.238 include:spf.mtaroutes.com include:spf.everycloudtech.com include:spf.protection.outlook.com include:spf.mandrillapp.com -all
  • MS=ms58786145
  • google-site-verification=2_DssMhJdyFWFgFKseDw-SoMu5hVPtSQeQyssyUeFbc
  • 0ed1fe018a87d3d77a9afa4747b43de8
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