acs.com.tw

Valid Email Server
Domain Lookup › acs.com.tw

Domain Overview

DNS: ✓ 1d ago Checker: ✓ 1d ago
acs.com.tw
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-10-30 04:13:48 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

  • post2-4.ctci.com
  • post2-3.ctci.com
  • post1-2.ctci.com
  • post1-3.ctci.com
  • post1-4.ctci.com
  • post2-2.ctci.com
  • post2-1.ctci.com
  • post1-1.ctci.com

MX Priorities

  • post1-1.ctci.com: 20
  • post2-4.ctci.com: 70
  • post2-2.ctci.com: 30
  • post2-1.ctci.com: 20
  • post1-2.ctci.com: 30
  • post1-3.ctci.com: 50
  • post1-4.ctci.com: 70
  • post2-3.ctci.com: 50

A / AAAA Records

  • 61.219.243.228 (no PTR)

Mail Server IPs

  • 59.124.13.151 (no PTR)
  • 59.124.13.154 (no PTR)
  • 118.163.88.40 (no PTR)
  • 118.163.88.39 (no PTR)
  • 59.124.13.152 (no PTR)

SOA Record

Raw SOA websrvr hostmaster 136 900 600 86400 3600
Primary NS (mname)
websrvr
Admin Email (rname)
hostmaster
Serial
136
Refresh
900s
Retry
600s
Expire
86400s
Minimum TTL
3600s

Nameservers (NS)

dns40.acs.com.tw

SPF Record

✓ Strict (-all)
v=spf1 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

✗ 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

5 records
  • google-site-verification=9BEtVry9F-nrirZTwI8BFhxgP-p9qR9d83fO2cXgaRo
  • 3XDtMveQelqRAbmGah9vXMvHZ3r6Ir10RC5yBFBSYN0
  • google-site-verification=I538xrRKw74f4kfZpUxMQGbs9rQG8jZ8A6ZoQWDZ41U
  • MS=ms80516591
  • SPFv=spf1 include:spf.protection.outlook.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 acs.com.tw

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

No credit card required
Get 1,000 Free Credits