Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
csm.edu.mx
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-01 01:10:52 UTC · ↺ Refresh
MX Hostnames
- csm-edu-mx.mail.protection.outlook.com
MX Priorities
- csm-edu-mx.mail.protection.outlook.com: 0
A / AAAA Records
- 169.48.110.76 ↩ davinci.pnetserver.net
Mail Server IPs
- 40.93.192.4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
- 52.101.8.51 ↩ mail-dm1pr04cu00203.inbound.protection.outlook.com
- 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
- 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c803:: ↩ mail-bn1pr21cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f90f::1 ↩ mail-sa9pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c902::16 ↩ mail-byapr04cu00306.inbound.protection.outlook.com
- 2a01:111:f403:f804::1 ↩ mail-co1pr05cu00301.inbound.protection.outlook.com
SOA Record
Raw SOA
ns11.pnetserver.net telaio\.server\.logs.gmail.com 2026033101 3600 1800 1209600 86400
Primary NS (mname)
ns11.pnetserver.net
Admin Email (rname)
telaio\@server\.logs.gmail.com
Serial
2026033101
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns11.pnetserver.net
ns12.pnetserver.net
SPF Record
✓ Strict (-all)
v=spf1 ip4:169.48.110.76 ip4:169.44.105.247 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict 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
default._domainkey
k1._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
4 records- SPFv=spf1 ip4:169.48.110.76 ip4:169.44.105.247 include:spf.protection.outlook.com -all
- MS=ms73677845
- apple-domain-verification=MhMyYUkpfwczS4gc
- google-site-verification=1xyaGfXEQoedNnLSFU8FB2P4oJZJZrj25VbKJhTTJMY
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 csm.edu.mx
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits