Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cemstone.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 04:48:17 UTC · ↺ Refresh
MX Hostnames
- cemstone-com.mail.protection.outlook.com
MX Priorities
- cemstone-com.mail.protection.outlook.com: 0
A / AAAA Records
- 141.193.213.21 (no PTR)
- 141.193.213.20 (no PTR)
Mail Server IPs
- 52.101.11.15 ↩ mail-sa9pr02cu00207.inbound.protection.outlook.com
- 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 52.101.10.18 ↩ mail-bn8pr05cu00302.inbound.protection.outlook.com
- 52.101.9.24 ↩ mail-bl2pr02cu00400.inbound.protection.outlook.com
- 2a01:111:f403:f90a::1 ↩ mail-bn8pr03cu00201.inbound.protection.outlook.com
- 2a01:111:f403:f908::2 ↩ mail-bn8pr05cu00102.inbound.protection.outlook.com
- 2a01:111:f403:c936:: ↩ mail-cy1pr05cu00400.inbound.protection.outlook.com
- 2a01:111:f403:f802:: ↩ mail-byapr05cu00400.inbound.protection.outlook.com
SOA Record
Raw SOA
ns1-07.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-07.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns2-07.azure-dns.net
ns3-07.azure-dns.org
ns4-07.azure-dns.info
ns1-07.azure-dns.com
SPF Record
✓ Strict (-all)
v=spf1 a mx ip4:64.78.151.128/26 ip4:216.241.183.0/24 ip4:170.149.220.96/28 ip4:170.146.221.96/28 ip4:72.165.199.115 ptr a:billtrust.com include:u7903245.wl246.sendgrid.net include:spf.icontroller.eu include:spf.protection.outlook.com -all
📊 DNS lookups: 7/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 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
5 records- MS=ms94247373
- SPFv=spf1 a mx ip4:64.78.151.128/26 ip4:216.241.183.0/24 ip4:170.149.220.96/28 ip4:170.146.221.96/28 ip4:72.165.199.115 ptr a:billtrust.com include:u7903245.wl246.sendgrid.net include:spf.icontroller.eu include:spf.protection.outlook.com -all
- google-site-verification=-4_J6byT9T0aHyMLclTQmQ8OqlXEP4eCWBFIggZgN9g
- duo_sso_verification=NtzjEI1ManZU3xUJek8Oer9VscAXvDpFhGNSamdQ9QzPgxcpOGGT2jABGoK3zBck
- /tc+YG1UG0ltoXbYAQYOwlyoXMXuT8GuTtb/oP6ocrx1NsF3Uhp0d7pLUMftL/37jb6RAnc1lqeIcwrbpgZFHw==
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