Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gtri.gatech.edu
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-30 03:24:17 UTC · ↺ Refresh
MX Hostnames
- gtrigov.mail.protection.office365.us
MX Priorities
- gtrigov.mail.protection.office365.us: 10
A / AAAA Records
- 130.207.193.149 ↩ www.gtri.gatech.edu
Mail Server IPs
- 23.103.199.138 ↩ mail-bn3usg020138.inbound.protection.outlook.com
- 23.103.199.170 ↩ mail-cy1usg020170.inbound.protection.outlook.com
- 2001:489a:2202:5::10 ↩ mail-cy1usg020010.inbound.protection.outlook.com
- 2001:489a:2202:4::10 ↩ mail-bn3usg020010.inbound.protection.outlook.com
SOA Record
Raw SOA
dns1.gatech.edu hostmaster.gatech.edu 3271 3600 600 1209600 3600
Primary NS (mname)
dns1.gatech.edu
Admin Email (rname)
hostmaster@gatech.edu
Serial
3271
Refresh
3600s
Retry
600s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
dns2.gatech.edu
dns1.gatech.edu
dns3.gatech.edu
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:130.207.205.170/32 ip4:130.207.193.244/32 ip4:130.207.193.245/32 ip4:130.207.199.162/32 ip4:104.152.224.62/32 ip4:130.207.182.15/32 include:servers.mcsv.net include:spf.protection.office365.us -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; adkim=s; aspf=r;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
k1._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
12 records- SPFv=spf1 mx ip4:130.207.205.170/32 ip4:130.207.193.244/32 ip4:130.207.193.245/32 ip4:130.207.199.162/32 ip4:104.152.224.62/32 ip4:130.207.182.15/32 include:servers.mcsv.net include:spf.protection.office365.us -all
- atlassian-domain-verification=Zk3DGNJOOLxPDKl9MI94kugW0ngT9l9luYtWycKhgmV/jhVZYlqLAFsEIzXRcYQe
- cisco-ci-domain-verification=23f49512991ae38f01ac0bb3915e4e6e521ab4976819cec8f69dc5e6069a80ba
- MS=ms13959007
- apple-domain-verification=5mkiiTZFjRg9jj76
- docker-verification=21dd4af0-f182-4205-b515-ab8cfdd2be7e
- google-site-verification=OBl0qpM_FI3jdYVcX4konLxny1Kc7c8VHkkDy7e8-aA
- old-record-webexdomainverification.7XFIT=7f30463c-476b-41ba-833b-6509c343ff74
- MS=FB3F1882A4341EB2543DF98CE975E26B9566BD98
- AOHEIxPjItKfvzSgezsgJnSWL+leOus2/EX0mgwBH/Cxsk+irvsk2JIQkZGmwDWYppvocLtid67Ahohaw1Gtew==
- e2ma-verification=dlchb
- google-site-verification=PS305YkfmHxqTt_FBi7dNvg77gtUrEmDFTfxcSOvwyQ
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 gtri.gatech.edu
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits