acuonline.org

Valid Email Server
Domain Lookup › acuonline.org

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
acuonline.org
Yes
✓ Yes
Proofpoint
No
No
⚠ Yes
No
No
Did you mean: [email protected]

Checked via [email protected] · 2026-03-18 09:58:11 UTC · ↺ Refresh

MX Hostnames

  • mxa-004ebc01.gslb.pphosted.com
  • mxb-004ebc01.gslb.pphosted.com

MX Priorities

  • mxb-004ebc01.gslb.pphosted.com: 10
  • mxa-004ebc01.gslb.pphosted.com: 10

A / AAAA Records

  • 104.18.38.24 (no PTR)
  • 172.64.149.232 (no PTR)

Mail Server IPs

  • 205.220.163.46 ↩ mx0a-004ebc01.pphosted.com
  • 205.220.175.45 ↩ mx0b-004ebc01.pphosted.com

SOA Record

Raw SOA edns123.ultradns.com servicesmanagement\.di.ncr.com 2014082214 28800 7200 1209600 86400
Primary NS (mname)
edns123.ultradns.com
Admin Email (rname)
servicesmanagement\@di.ncr.com
Serial
2014082214
Refresh
28800s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

edns123.ultradns.com
edns123.ultradns.net
edns123.ultradns.org
edns123.ultradns.biz

SPF Record

✓ Soft Fail (~all)
v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; sp=quarantine; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected];
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed · DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine

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

10 records
  • docusign=5f3711fd-56cc-480a-a124-425b054d98aa
  • docusign=a45cfbe0-6a68-4a46-8376-80a0dc08c188
  • SPFv=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all
  • smartsheet-site-validation=_SzRX9JmciqP8AbeGo5ESlmMbR5H-Raf
  • rSU+laXHY1VEZkXjzPkZT9oawt9kzrfIBAEtfRIR5MjPr2x8FtghY0onJukDMGE1YZNxquMAHybPBDBmeY3jxw==
  • cisco-ci-domain-verification=48cb889161923210f3062692698129d6fd87bba6dbbdfe93454f2baa1bd95181
  • MS=ms85392673
  • abeja3h9nfos3n0jj66hn0c1b
  • uv34v8p9v5j6cfr2274al5ugpu
  • apple-domain-verification=wPx464oomTjiLA1H
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
See demo & docs
Deep verification
Full email verification for acuonline.org

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

No credit card required
Get 1,000 Free Credits