Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
iesc1.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 20:16:49 UTC · ↺ Refresh
MX Hostnames
- usb-smtp-inbound-1.mimecast.com
- usb-smtp-inbound-2.mimecast.com
MX Priorities
- usb-smtp-inbound-2.mimecast.com: 10
- usb-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 107.180.39.236 ↩ 236.39.180.107.host.secureserver.net
Mail Server IPs
- 170.10.150.242 ↩ usb-smtp-delivery-2.mimecast.com
SOA Record
Raw SOA
ns29.domaincontrol.com dns.jomax.net 2026010803 28800 7200 604800 600
Primary NS (mname)
ns29.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2026010803
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns29.domaincontrol.com
ns30.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 include:usb._netblocks.mimecast.com include:spf.protection.outlook.com ip4:35.160.111.10 ip4:216.81.154.179 ip4:216.81.154.183 include:birddoghr.com include:spf.us.signature365.net include:_spf.smtp.com -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; pct=100;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
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- specops-verification-code=6201e5f9-c441-47d4-b037-79e2da2f40f3
- SPFv=spf1 include:usb._netblocks.mimecast.com include:spf.protection.outlook.com ip4:35.160.111.10 ip4:216.81.154.179 ip4:216.81.154.183 include:birddoghr.com include:spf.us.signature365.net include:_spf.smtp.com -all
- sophos-domain-verification=69a35876b80e722d90c042a888f168c603fc5bef
Full email verification for iesc1.com
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