Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
cofk.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 00:33:38 UTC · ↺ Refresh
MX Hostnames
- cc1fax01.cofk.com
- usb-smtp-inbound-1.mimecast.com
- usb-smtp-inbound-2.mimecast.com
- cofk1fax01.cofk.com
MX Priorities
- cc1fax01.cofk.com: 20
- cofk1fax01.cofk.com: 20
- usb-smtp-inbound-1.mimecast.com: 10
- usb-smtp-inbound-2.mimecast.com: 10
A / AAAA Records
- 3.33.251.168 ↩ aec037177372cc6cd.awsglobalaccelerator.com
- 15.197.225.128 ↩ aec037177372cc6cd.awsglobalaccelerator.com
Mail Server IPs
- 97.79.221.3 ↩ syn-097-079-221-003.biz.spectrum.com
- 170.10.150.242 ↩ usb-smtp-delivery-2.mimecast.com
- 170.10.152.242 ↩ usb-smtp-delivery-2.mimecast.com
SOA Record
Raw SOA
ns05.domaincontrol.com dns.jomax.net 2026031902 28800 7200 604800 600
Primary NS (mname)
ns05.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026031902
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns06.domaincontrol.com
ns05.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 include:usb._netblocks.mimecast.com include:spf.protection.outlook.com include:24373520.spf01.hubspotemail.net include:spf.US.exclaimer.net include:catsoneemail.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]; ruf=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 3 found
selector1._domainkey
selector2._domainkey
k1._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- SPFv=spf1 include:usb._netblocks.mimecast.com include:spf.protection.outlook.com include:24373520.spf01.hubspotemail.net include:spf.US.exclaimer.net include:catsoneemail.com -all
- 3tmoiicldj8qgvgvo57edhrbo8
- 0ed1fe018a21be142223af48888a1ebdab2b472fba
- docusign=6407a5b2-3cfc-4c8e-bb69-22ae68326de0
- cisco-ci-domain-verification=42bca9214f9cf6a43ece38a64dd5207d912e0d1040eabe7bdab50bc9b8e92366
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