sierramfg.mx

Valid Email Server

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
sierramfg.mx
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-28 09:25:46 UTC · ↺ Refresh

MX Hostnames

  • aspmx.l.google.com

MX Priorities

  • aspmx.l.google.com: 10

A / AAAA Records

  • 216.239.38.21 ↩ any-in-2615.1e100.net
  • 216.239.36.21 ↩ any-in-2415.1e100.net
  • 216.239.32.21 ↩ any-in-2015.1e100.net
  • 216.239.34.21 ↩ any-in-2215.1e100.net

Mail Server IPs

  • 172.253.122.26 ↩ bh-in-f26.1e100.net
  • 2607:f8b0:4004:c09::1b ↩ bh-in-f27.1e100.net

SOA Record

Raw SOA ns-cloud-d1.googledomains.com cloud-dns-hostmaster.google.com 9 21600 3600 259200 300
Primary NS (mname)
ns-cloud-d1.googledomains.com
Admin Email (rname)
cloud-dns-hostmaster@google.com
Serial
9
Refresh
21600s
Retry
3600s
Expire
259200s
Minimum TTL
300s

Nameservers (NS)

ns-cloud-d4.googledomains.com
ns-cloud-d1.googledomains.com
ns-cloud-d3.googledomains.com
ns-cloud-d2.googledomains.com

SPF Record

✗ Missing

No SPF record — domain is unprotected against spoofing.

⚠ No SPF record found. Email servers cannot verify authorized senders.

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

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

No TXT records found.

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 sierramfg.mx

SMTP handshake, catch-all detection, SPF/DKIM/DMARC analysis, and Yahoo/Outlook verification.

Get 1,000 Free Credits