Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
m-corp.us
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 00:57:30 UTC · ↺ Refresh
MX Hostnames
- mcorp-us0c.mail.protection.outlook.com
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 10
- us-smtp-inbound-2.mimecast.com: 10
- mcorp-us0c.mail.protection.outlook.com: 90
A / AAAA Records
- 141.193.213.11
- 141.193.213.10
Mail Server IPs
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 52.101.9.21 ↩ mail-bl2pr04cu00205.inbound.protection.outlook.com
- 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
- 52.101.10.12 ↩ mail-bn1pr21cu00204.inbound.protection.outlook.com
- 2a01:111:f403:f804::1
- 2a01:111:f403:c903::3
- 2a01:111:f403:f902::2
- 2a01:111:f403:c92c::2
SOA Record
Raw SOA
dns1.cscdns.net hostmaster.cscdns.net 2025031919 28800 7200 604800 14400
Primary NS (mname)
dns1.cscdns.net
Admin Email (rname)
hostmaster@cscdns.net
Serial
2025031919
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
14400s
Nameservers (NS)
dns2.cscdns.net
dns1.cscdns.net
SPF Record
✓ Strict (-all)
v=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com ip4:96.244.76.216/29 -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=100; sp=quarantine; aspf=s; adkim=s;
✓ Reject — strongest protection
📋 SPF alignment: Strict
· DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)
↳ Subdomain policy: quarantine
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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- SPFv=spf1 include:us._netblocks.mimecast.com include:spf.protection.outlook.com ip4:96.244.76.216/29 -all
- MS=ms28718251
- MS=ms30579071
- 0ed1fe018af9a4e541f8e246cbaf5372c8152a957d
- apple-domain-verification=pSxrBbmtpAzlaoaj
- google-site-verification=020-dyLo-0M9Eu7pUdi_rAG7qOENgVoiJ1XHQORv2jA
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