gostackr.com

Valid Email Server
Domain Lookup › gostackr.com
Live data — DNS records and disposable check were just fetched and saved.

Domain Overview

DNS: ⚡ live Checker: ⚡ live
gostackr.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-05-21 07:41:36 UTC · ↺ Refresh

MX Hostnames

  • gostackr-com.mail.protection.outlook.com

MX Priorities

No priority data.

A / AAAA Records

  • 13.249.91.124
  • 13.249.91.20
  • 13.249.91.6
  • 13.249.91.128

Mail Server IPs

No IPs resolved.

SOA Record

No SOA record found.

Nameservers (NS)

ns-1095.awsdns-08.org
ns-2032.awsdns-62.co.uk
ns-884.awsdns-46.net
ns-98.awsdns-12.com

SPF Record

✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:sendgrid.net ipv4:149.72.198.200 include:_spf.firebasemail.com -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

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

DKIM Selectors

✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 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

4 records
  • google-site-verification=aTCgVtKnzv5uINYuUnzCgVfI_ZAcrhAuayZgq1oKi0E
  • SPFv=spf1 include:spf.protection.outlook.com include:sendgrid.net ipv4:149.72.198.200 include:_spf.firebasemail.com -all
  • MS=ms31003984
  • firebase=gostackr-d0e4b
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 gostackr.com

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

No credit card required
Get 1,000 Free Credits