Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
sdm.com.mx
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-25 19:51:41 UTC · ↺ Refresh
MX Hostnames
- ALT3.ASPMX.L.GOOGLE.COM
- ALT1.ASPMX.L.GOOGLE.COM
- ASPMX.L.GOOGLE.COM
- ALT4.ASPMX.L.GOOGLE.COM
- ALT2.ASPMX.L.GOOGLE.COM
MX Priorities
- alt1.aspmx.l.google.com: 5
- alt2.aspmx.l.google.com: 5
- alt4.aspmx.l.google.com: 10
- alt3.aspmx.l.google.com: 10
- aspmx.l.google.com: 1
A / AAAA Records
- 216.55.170.40
Mail Server IPs
- 108.177.123.27 ↩ lcscld-in-f27.1e100.net
- 2800:3f0:4003:c0f::1a (no PTR)
- 172.253.116.27 ↩ dj-in-f27.1e100.net
- 2a00:1450:400b:c02::1b ↩ dj-in-f27.1e100.net
- 173.194.76.26 ↩ ws-in-f26.1e100.net
- 2a00:1450:400c:c00::1a ↩ ws-in-f26.1e100.net
- 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
- 2a00:1450:4009:c0f::1b ↩ yulhrs-in-f27.1e100.net
- 172.253.62.26 ↩ bc-in-f26.1e100.net
- 2607:f8b0:4004:c0b::1b ↩ bj-in-f27.1e100.net
SOA Record
Raw SOA
localhost root.localhost 2023013001 10800 15 604800 10800
Primary NS (mname)
localhost
Admin Email (rname)
root@localhost
Serial
2023013001
Refresh
10800s
Retry
15s
Expire
604800s
Minimum TTL
10800s
Nameservers (NS)
jupiter.colegioweb.com
master.colegioweb.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:_spf.google.com ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo 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
3 records- SPFv=spf1 include:_spf.google.com ~all
- MS=B2D81CE1ACA5004284D22CF889AEAAFB11185F17
- google-site-verification=0CyL_NAmu2TDSqUsVdak4m-C16qnbafBb9fejXS2zp4
Full email verification for sdm.com.mx
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