Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
deltasigmatheta.org
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 22:31:40 UTC · ↺ Refresh
MX Hostnames
- deltasigmatheta-org.mail.protection.outlook.com
MX Priorities
- deltasigmatheta-org.mail.protection.outlook.com: 0
A / AAAA Records
- 172.66.148.124 (no PTR)
- 104.20.23.210 (no PTR)
- 2606:4700:10::ac42:947c
- 2606:4700:10::6814:17d2
Mail Server IPs
- 52.101.41.22 ↩ mail-sj2pr05cu00406.inbound.protection.outlook.com
- 52.101.50.7 ↩ mail-co1pr21cu00207.inbound.protection.outlook.com
- 52.101.40.1 ↩ mail-cy4pr03cu00101.inbound.protection.outlook.com
- 52.101.40.24 ↩ mail-cy5pr05cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c927:: ↩ mail-bn6pr21cu00500.inbound.protection.outlook.com
- 2a01:111:f403:c931::1 ↩ mail-sa9pr03cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c946::1 ↩ mail-ch1pr04cu00101.inbound.protection.outlook.com
- 2a01:111:f403:c922:: ↩ mail-bl0pr03cu00200.inbound.protection.outlook.com
SOA Record
Raw SOA
jeremy.ns.cloudflare.com dns.cloudflare.com 2397987392 10000 2400 604800 1800
Primary NS (mname)
jeremy.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397987392
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
jeremy.ns.cloudflare.com
luciane.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:sendgrid.net -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=50; fo=1; rua=mailto:[email protected]; ruf=mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
⚠ Policy applies to 50% of failing messages only
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
mail._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
6 records- google-site-verification=3nnLDyx-PcaY_gwqAm7RB8u3SSgjtxnUJAm6mSUK5X8
- i2j8alm55b0a7h5706m8eb7gd6
- intacctesk=FF9B42058A9BFABEE0533906690A087A
- SPFv=spf1 include:spf.protection.outlook.com include:sendgrid.net -all
- apple-domain-verification=zglWEMT6r7Nl8nd8
- brevo-code:5f48ddc895442df320714e4afbc41f28
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