Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
unidosus.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 06:17:14 UTC · ↺ Refresh
MX Hostnames
- unidosus-org.mail.protection.outlook.com
MX Priorities
- unidosus-org.mail.protection.outlook.com: 0
A / AAAA Records
- 141.193.213.20 (no PTR)
- 141.193.213.21 (no PTR)
Mail Server IPs
- 52.101.41.58 ↩ mail-sj0pr02cu00102.inbound.protection.outlook.com
- 52.101.10.1 ↩ mail-bn6pr02cu00301.inbound.protection.outlook.com
- 52.101.11.7 ↩ mail-sa9pr04cu00107.inbound.protection.outlook.com
- 52.101.194.12 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c931:: ↩ mail-sn1pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c902::6 ↩ mail-sj0pr21cu00106.inbound.protection.outlook.com
- 2a01:111:f403:f902:: ↩ mail-bl2pr04cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
cbru.br.ns.els-gms.att.net rm-hostmaster.ems.att.com 137 10800 3600 604800 86400
Primary NS (mname)
cbru.br.ns.els-gms.att.net
Admin Email (rname)
rm-hostmaster@ems.att.com
Serial
137
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
86400s
Nameservers (NS)
cmtu.mt.ns.els-gms.att.net
cbru.br.ns.els-gms.att.net
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.protection.outlook.com include:outboundmail.blackbaud.net include:spf.cfdynamics.com include:_spf.samanage.com ~all
📊 DNS lookups: 4/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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
12 records- kk71a87pfdic5rql7bbff0kj2i
- 8qcm4p85keq427agofkbinkmgg
- SPFv=spf1 include:spf.protection.outlook.com include:outboundmail.blackbaud.net include:spf.cfdynamics.com include:_spf.samanage.com ~all
- sgdjjfkvpb3a4actpavro9f7gg
- include:lsoft.com ~all
- DaYbMI/cevvXGHK9XbulzJ/mBk4CQqaTZA9OWtxx9ns6VqtTDNFaqfT7tvRcI1JtEyT9owHDOtLHuGH83pXrTg==
- tfiobi0skfoeu7t5kp5fpq0i9v
- D+2Okd2VOD2BV5irjn9eAwz1gvQ7I6gQfuP81618TplISUJZh2CqKMxILEpvZyuDVHgS88XecqWjb8/mI8CP8g==
- amazonses:trtUHzGU9ZhCfDtkdGsLUquE7J3vQzxzszibigyiP1o=
- solarwinds-service0desk-verification=a64de8896ec1dd352b359037511cc4b6
- 3qedb6teompt62pcajsga359h3
- baahl5idsk3selmtekm68aqfsd
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 unidosus.org
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits