Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
rfcuny.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-04 06:28:58 UTC · ↺ Refresh
MX Hostnames
- rfcuny-org.mail.protection.outlook.com
MX Priorities
- rfcuny-org.mail.protection.outlook.com: 0
A / AAAA Records
- 128.228.133.7 ↩ www.rfcuny.org
Mail Server IPs
- 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
- 52.101.194.17 ↩ mail-ch5pr02cu00401.inbound.protection.outlook.com
- 52.101.41.28 ↩ mail-sj0pr03cu01504.inbound.protection.outlook.com
- 52.101.41.24 ↩ mail-sj0pr03cu01600.inbound.protection.outlook.com
- 2a01:111:f403:f901:: ↩ mail-mn2pr04cu00200.inbound.protection.outlook.com
- 2a01:111:f403:f903:: (no PTR)
- 2a01:111:f403:f908::2 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f802::1 ↩ mail-sj2pr05cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
ns-948.awsdns-54.net administrator.rfcuny.org 1 7200 900 1209600 86400
Primary NS (mname)
ns-948.awsdns-54.net
Admin Email (rname)
administrator@rfcuny.org
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-91.awsdns-11.com
ns-948.awsdns-54.net
ns-1199.awsdns-21.org
ns-1831.awsdns-36.co.uk
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com a:mailhost.rfcuny.org a:exch.rfcuny.org a:rfess.rfcuny.org ip4:72.55.140.81 ip4:128.228.133.40 -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; sp=quarantine; fo=1;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
↳ Subdomain policy: quarantine
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- haj7e77ivldgdlpbu6tnid11dd
- SPFv=spf1 include:spf.protection.outlook.com a:mailhost.rfcuny.org a:exch.rfcuny.org a:rfess.rfcuny.org ip4:72.55.140.81 ip4:128.228.133.40 -all
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