Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gaston.edu
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 05:24:26 UTC · ↺ Refresh
MX Hostnames
- gaston-edu.mail.protection.outlook.com
MX Priorities
- gaston-edu.mail.protection.outlook.com: 10
A / AAAA Records
- 141.193.213.21 (no PTR)
Mail Server IPs
- 52.101.194.4 ↩ mail-ch4pr04cu00104.inbound.protection.outlook.com
- 52.101.8.44 ↩ mail-dm5pr04cu00104.inbound.protection.outlook.com
- 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
- 52.101.10.1 ↩ mail-bn6pr02cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c946::4 ↩ mail-ch0pr04cu00504.inbound.protection.outlook.com
- 2a01:111:f403:c903::3 ↩ mail-mw2pr02cu00503.inbound.protection.outlook.com
- 2a01:111:f403:c902::7 ↩ mail-sj0pr02cu00107.inbound.protection.outlook.com
- 2a01:111:f403:c802:: ↩ mail-cy4pr03cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-01.mcnc.org hostmaster.ncren.net 2026030301 14400 3600 1209600 14400
Primary NS (mname)
ns-01.mcnc.org
Admin Email (rname)
hostmaster@ncren.net
Serial
2026030301
Refresh
14400s
Retry
3600s
Expire
1209600s
Minimum TTL
14400s
Nameservers (NS)
ns-01.mcnc.org
ns-02.mcnc.org
SPF Record
✓ Strict (-all)
v=spf1 ip4:152.27.22.117 ip4:66.57.143.24 ip4:204.116.166.143 ip4:74.122.104.0/22 include:spf.protection.outlook.com include:relay.mailchannels.net include:_spf.regroupcloud.com include:mailgun.org -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1;p=quarantine;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];ri=84600;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 216 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
2 records- SPFv=spf1 ip4:152.27.22.117 ip4:66.57.143.24 ip4:204.116.166.143 ip4:74.122.104.0/22 include:spf.protection.outlook.com include:relay.mailchannels.net include:_spf.regroupcloud.com include:mailgun.org -all
- duo_sso_verification=JTqy73rEMMcACD2AntWx3IWMpzNk3v2C3ZngGvCRNL4NKp5FiV3RfQplml7k7A2P
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