Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
costsegauthority.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 17:26:05 UTC · ↺ Refresh
MX Hostnames
- costsegauthority-com.mail.protection.outlook.com
MX Priorities
- costsegauthority-com.mail.protection.outlook.com: 0
A / AAAA Records
- 151.101.66.159 (no PTR)
Mail Server IPs
- 52.101.41.56 ↩ mail-sj0pr21cu00100.inbound.protection.outlook.com
- 52.101.10.6 ↩ mail-bn1pr21cu00106.inbound.protection.outlook.com
- 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
- 52.101.10.5 ↩ mail-bn6pr04cu00105.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c946:: ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 2a01:111:f403:c931:: ↩ mail-sn1pr02cu00100.inbound.protection.outlook.com
- 2a01:111:f403:f905::4 ↩ mail-dm2pr04cu00404.inbound.protection.outlook.com
SOA Record
Raw SOA
harlee.ns.cloudflare.com dns.cloudflare.com 2396049000 10000 2400 604800 1800
Primary NS (mname)
harlee.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2396049000
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
harlee.ns.cloudflare.com
hassan.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; pct=100; sp=quarantine;
~ 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
9 records- MS=ms72388691
- amazon-business-verification=c93d98280e7d6253a5a4bb69802803915bdfd21a5dd532452b519729db12fbdd
- apple-domain-verification=D7lGxyJ8tHCGNhKf
- d365mktkey=cMgcagxSN04PzOaIMxnwDpMO00iiipdEEeTqKN202wUx
- google-site-verification=1ErH8TbveGBH3W2CFidDXyo4XOXgEtbupES7j2ACdKs
- google-site-verification=Z8pRcqgt3wrjfMfMgjgJkUBmHCJy3Vhgl1mFlFN0pmI
- google-site-verification=yPPKhQu0mo9yhWIip9vxLmRqVlr4S7sXfpkStDZWYDs
- sophos-domain-verification=9238ca0ffe1cab8b91d45ce070fdcbbc07ec75b2d31d97809234d81ac9aedae7
- SPFv=spf1 include:spf.protection.outlook.com -all
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