sheridan.k12.mt.us

Valid Email Server
Domain Lookup › sheridan.k12.mt.us

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
sheridan.k12.mt.us
Yes
✓ Yes
Google
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-04-02 01:11:54 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

  • alt4.aspmx.l.google.com: 10
  • alt1.aspmx.l.google.com: 5
  • alt3.aspmx.l.google.com: 10
  • alt2.aspmx.l.google.com: 5
  • aspmx.l.google.com: 1

A / AAAA Records

  • 34.238.178.141

Mail Server IPs

  • 173.194.76.26 ↩ ws-in-f26.1e100.net
  • 2a00:1450:400c:c00::1b ↩ ws-in-f27.1e100.net
  • 108.177.123.26 ↩ lcscld-in-f26.1e100.net
  • 2800:3f0:4003:c0f::1a (no PTR)
  • 192.178.223.26 ↩ yulhrs-in-f26.1e100.net
  • 2a00:1450:4009:c0f::1a ↩ yulhrs-in-f26.1e100.net
  • 172.253.116.26 ↩ dj-in-f26.1e100.net
  • 2a00:1450:400b:c02::1a ↩ dj-in-f26.1e100.net
  • 172.253.62.27 ↩ bc-in-f27.1e100.net
  • 2607:f8b0:4004:c23::1b ↩ yuiadrs-in-f27.1e100.net

SOA Record

Raw SOA ns1.vision.net root.www.sheridan.k12.mt.us 640508674 3600 300 1209600 10800
Primary NS (mname)
ns1.vision.net
Admin Email (rname)
root@www.sheridan.k12.mt.us
Serial
640508674
Refresh
3600s
Retry
300s
Expire
1209600s
Minimum TTL
10800s

Nameservers (NS)

ns1.vision.net
ns2.vision.net

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.google.com include:sendgrid.net ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: s1

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 include:sendgrid.net ~all
  • google-site-verification=tqlKUjWwg5xHdTEoB6BNwEhJcu5RTbeFbG9yT7D6pss
  • MS=7B3C3AD1EE2430AD5C8791759B6735A451EED7DA
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 sheridan.k12.mt.us

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits