3s.se

Valid Email Server
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
3s.se
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-09-23 07:07:16 UTC · ↺ Refresh

Add email validation to your forms — free

Add our free script to block 10,000+ disposable domains + perform other checks. No signup, unlimited checks.

MX validation Disposable detection Role accounts
Add to your signup form
<script src="https://check.verifyswift.com/"></script>
One line · No registration · See full docs & demo → · Customize →

MX Hostnames

  • 3s-se.mail.protection.outlook.com

MX Priorities

  • 3s-se.mail.protection.outlook.com: 1

A / AAAA Records

  • 23.236.62.147 ↩ 147.62.236.23.bc.googleusercontent.com

Mail Server IPs

  • 52.101.209.31 ↩ mail-cpjpr05cu00207.inbound.protection.outlook.com
  • 52.101.103.162 ↩ mail-miypr03cu00202.inbound.protection.outlook.com
  • 52.101.91.21 ↩ mail-matpr05cu00105.inbound.protection.outlook.com
  • 52.101.103.140 ↩ mail-miypr02cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca48::10 ↩ mail-miypr05cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca38::8 ↩ mail-wa4pr04cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:ca21::c ↩ mail-matpr04cu00204.inbound.protection.outlook.com
  • 2a01:111:f403:ca3c::a ↩ mail-zrxpr07cu00102.inbound.protection.outlook.com

SOA Record

Raw SOA ns1.loopia.se registry.loopia.se 1789603200 14400 3600 604800 86400
Primary NS (mname)
ns1.loopia.se
Admin Email (rname)
registry@loopia.se
Serial
1789603200
Refresh
14400s
Retry
3600s
Expire
604800s
Minimum TTL
86400s

Nameservers (NS)

ns1.loopia.se
ns2.loopia.se

SPF Record

✓ Strict (-all)
v=spf1 mx include:spf.protection.outlook.com include:sendgrid.net include:spf.flowmailer.net include:148703363.spf02.hubspotemail.net -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
⚠ p=none — monitoring only, no enforcement
📋 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
  • MS=ms69506758
  • SPFv=spf1 mx include:spf.protection.outlook.com include:sendgrid.net include:spf.flowmailer.net include:148703363.spf02.hubspotemail.net -all
Free · No signup required
Add email validation to your forms

Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.

<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site · Customize →
See demo & docs
Deep verification
Full email verification for 3s.se

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits