southtex.com

Valid Email Server
Domain Lookup › southtex.com

Domain Overview

DNS: ✓ 1d ago Checker: ✓ 1d ago
southtex.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-10-03 13:47:25 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

  • southtex-com.mail.protection.outlook.com

MX Priorities

  • southtex-com.mail.protection.outlook.com: 0

A / AAAA Records

  • 98.159.9.28 (no PTR)

Mail Server IPs

  • 52.101.50.1 ↩ mail-co1pr05cu00401.inbound.protection.outlook.com
  • 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
  • 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
  • 52.101.9.87 ↩ mail-bl2pr02cu00507.inbound.protection.outlook.com
  • 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
  • 2a01:111:f403:f802::3 ↩ mail-sj0pr03cu01403.inbound.protection.outlook.com
  • 2a01:111:f403:f804::2 ↩ mail-co1pr05cu00402.inbound.protection.outlook.com
  • 2a01:111:f403:f803::1 ↩ mail-byapr05cu00601.inbound.protection.outlook.com

SOA Record

Raw SOA a1-213.akam.net hostmaster.southtex.com 2023041806 3600 600 604800 300
Primary NS (mname)
a1-213.akam.net
Admin Email (rname)
hostmaster@southtex.com
Serial
2023041806
Refresh
3600s
Retry
600s
Expire
604800s
Minimum TTL
300s

Nameservers (NS)

a11-64.akam.net
a1-213.akam.net
a12-65.akam.net
a20-67.akam.net
a9-64.akam.net
a2-66.akam.net

SPF Record

✓ Soft Fail (~all)
v=spf1 a mx mx:mx1.kindermorgan.iphmx.com ip4:98.159.7.1/24 ip4:98.159.9.1/24 ip4:208.181.4.241 ip4:104.211.40.40 ip4:104.211.32.15 ip4:104.211.34.71 include:spf.protection.outlook.com exists:%{i}.spf.kindermorgan.iphmx.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

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

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
  • if+7bbupFIaV6//vFXVB4B9yRDHQJGq1j4XQkz4qwNPL0OiTeibIlKE82VanPQPrNkg0lJQRi2Ru9f8qLCEalQ==
  • SPFv=spf1 a mx mx:mx1.kindermorgan.iphmx.com ip4:98.159.7.1/24 ip4:98.159.9.1/24 ip4:208.181.4.241 ip4:104.211.40.40 ip4:104.211.32.15 ip4:104.211.34.71 include:spf.protection.outlook.com exists:%{i}.spf.kindermorgan.iphmx.com ~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 southtex.com

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

No credit card required
Get 1,000 Free Credits