Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
um.edu.mx
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-01 01:23:35 UTC · ↺ Refresh
MX Hostnames
- ASPMX4.GOOGLEMAIL.COM
- ALT3.ASPMX.L.GOOGLE.COM
- ASPMX3.GOOGLEMAIL.COM
- SMTP.GOOGLE.COM
- ALT2.ASPMX.L.GOOGLE.COM
- ALT1.ASPMX.L.GOOGLE.COM
- ASPMX2.GOOGLEMAIL.COM
- ALT4.ASPMX.L.GOOGLE.COM
MX Priorities
- aspmx3.googlemail.com: 10
- alt4.aspmx.l.google.com: 10
- aspmx4.googlemail.com: 10
- alt3.aspmx.l.google.com: 10
- aspmx2.googlemail.com: 10
- alt2.aspmx.l.google.com: 5
- alt1.aspmx.l.google.com: 10
- smtp.google.com: 5
A / AAAA Records
No A/AAAA records found.
Mail Server IPs
- 172.253.116.26 ↩ dj-in-f26.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 173.194.76.27 ↩ ws-in-f27.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-x1a.1e100.net
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
- 108.177.123.26 ↩ lcscld-in-f26.1e100.net
- 2800:3f0:4003:c0f::1b (no PTR)
SOA Record
Raw SOA
ns2 hostmaster 483 600 60 86400 3600
Primary NS (mname)
ns2
Admin Email (rname)
hostmaster
Serial
483
Refresh
600s
Retry
60s
Expire
86400s
Minimum TTL
3600s
Nameservers (NS)
ns1.um.edu.mx
castor.um.edu.mx
ns2.um.edu.mx
sun.um.edu.mx
SPF Record
✓ Strict (-all)
v=spf1 include:50422952.spf08.hubspotemail.net include:_spf.google.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; pct=100; rua=mailto:[email protected]; adkim=r; aspf=r
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
google._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: google
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 include:50422952.spf08.hubspotemail.net include:_spf.google.com -all
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