Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cosamarble.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 06:19:29 UTC · ↺ Refresh
MX Hostnames
- cosamarble-com.mail.protection.outlook.com
MX Priorities
- cosamarble-com.mail.protection.outlook.com: 0
A / AAAA Records
- 104.21.55.139 (no PTR)
- 172.67.148.240 (no PTR)
- 2606:4700:3035::6815:378b
- 2606:4700:3033::ac43:94f0
Mail Server IPs
- 52.101.41.22 ↩ mail-sj2pr05cu00406.inbound.protection.outlook.com
- 52.101.9.5 ↩ mail-mn2pr04cu00205.inbound.protection.outlook.com
- 52.101.10.6 ↩ mail-bn1pr21cu00106.inbound.protection.outlook.com
- 52.101.50.7 ↩ mail-co1pr21cu00207.inbound.protection.outlook.com
- 2a01:111:f403:f90d::1 ↩ mail-sn1pr0501cu00301.inbound.protection.outlook.com
- 2a01:111:f403:f90a::1 ↩ mail-bn8pr03cu00201.inbound.protection.outlook.com
- 2a01:111:f403:f903:: (no PTR)
- 2a01:111:f403:c922::2 ↩ mail-bl0pr02cu00702.inbound.protection.outlook.com
SOA Record
Raw SOA
peaches.ns.cloudflare.com dns.cloudflare.com 2399552577 10000 2400 604800 1800
Primary NS (mname)
peaches.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399552577
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
piotr.ns.cloudflare.com
peaches.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
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- brevo-code:29fddf239ce77ed5369fbeb6f35e1457
- google-site-verification=PBihjy-3nD8S5TQTUC3i1AzcxWJUZ3SPDMmUtAJSchg
- SPFv=spf1 include:spf.protection.outlook.com -all
Full email verification for cosamarble.com
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