Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
eff.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-19 14:38:51 UTC · ↺ Refresh
MX Hostnames
- eff-org.mail.protection.outlook.com
MX Priorities
- eff-org.mail.protection.outlook.com: 0
A / AAAA Records
- 173.239.79.200 ↩ observatory1.eff.org
Mail Server IPs
- 52.101.42.16 ↩ mail-co1pr05cu00300.inbound.protection.outlook.com
- 52.101.9.14 ↩ mail-bl0pr03cu00206.inbound.protection.outlook.com
- 52.101.10.8 ↩ mail-bn1pr04cu00100.inbound.protection.outlook.com
- 52.101.41.58 ↩ mail-sj0pr02cu00102.inbound.protection.outlook.com
- 2a01:111:f403:f805::1 ↩ mail-co1pr03cu00301.inbound.protection.outlook.com
- 2a01:111:f403:c902::14 ↩ mail-byapr04cu00204.inbound.protection.outlook.com
- 2a01:111:f403:f90c:: ↩ mail-sn1pr03cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f901::2 ↩ mail-bl2pr02cu00402.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1.eff.org hostmaster.eff.org 2026030702 600 1800 604800 1800
Primary NS (mname)
ns1.eff.org
Admin Email (rname)
hostmaster@eff.org
Serial
2026030702
Refresh
600s
Retry
1800s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
ns1.eff.org
ns4.eff.org
ns2.eff.org
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:173.239.79.202 include:spf1.eff.org include:spf2.eff.org include:spf.protection.outlook.com include:salsalabs.org -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected];
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
3 records- google-site-verification=Xqf-4VNlMzsu7X8mmX33O3jdZcvFavWtZen9xLBZ5S4
- ms-domain-verification=55064e24-4bc6-4f21-a39c-f9c0b295f3f3
- SPFv=spf1 mx ip4:173.239.79.202 include:spf1.eff.org include:spf2.eff.org include:spf.protection.outlook.com include:salsalabs.org -all
Full email verification for eff.org
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