Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
s4n.co
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-04-03 11:49:17 UTC · ↺ Refresh
MX Hostnames
- s4n-co.mail.protection.outlook.com
MX Priorities
- s4n-co.mail.protection.outlook.com: 10
A / AAAA Records
- 172.67.190.222 (no PTR)
- 104.21.92.90 (no PTR)
- 2606:4700:3035::ac43:bede
- 2606:4700:3034::6815:5c5a
Mail Server IPs
- 52.101.73.12 ↩ mail-am4pr0401cu00104.inbound.protection.outlook.com
- 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
- 52.101.68.27 ↩ mail-db7pr03cu00503.inbound.protection.outlook.com
- 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
- 2a01:111:f403:ca04::d ↩ mail-db6pr03cu00105.inbound.protection.outlook.com
- 2a01:111:f403:ca04:: ↩ mail-db3pr0202cu00100.inbound.protection.outlook.com
- 2a01:111:f403:ca09::3 ↩ mail-am6pr04cu00303.inbound.protection.outlook.com
- 2a01:111:f403:ca04::8 ↩ mail-db5pr02cu00100.inbound.protection.outlook.com
SOA Record
Raw SOA
ingrid.ns.cloudflare.com dns.cloudflare.com 2400027625 10000 2400 604800 1800
Primary NS (mname)
ingrid.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2400027625
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
wesley.ns.cloudflare.com
ingrid.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:91.120.43.3 ip4:91.120.43.4 include:spf.protection.outlook.com include:spf-epam.epam.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected];fo=1; adkim=r; aspf=r; pct=100; rf=afrf; ri=86400
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
1 record- SPFv=spf1 ip4:91.120.43.3 ip4:91.120.43.4 include:spf.protection.outlook.com include:spf-epam.epam.com -all
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