Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
jesco.us
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-29 03:38:38 UTC · ↺ Refresh
MX Hostnames
- 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
A / AAAA Records
- 54.212.104.212 ↩ ec2-54-212-104-212.us-west-2.compute.amazonaws.com
Mail Server IPs
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
ns-357.awsdns-44.com awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-357.awsdns-44.com
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s
Nameservers (NS)
ns-1125.awsdns-12.org
ns-1850.awsdns-39.co.uk
ns-357.awsdns-44.com
ns-921.awsdns-51.net
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:_netblocks.mimecast.com include:_spf.hosting.cdkglobal.com include:spf.happyfox.com -all
📊 DNS lookups: 4/10
✓ 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
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
8 records- MS=ms45039145
- apple-domain-verification=EueslrxYzCYdZFQT
- cisco-ci-domain-verification=7319d6e8c2a7e6e4bdfdbb1515e5fd539a3220aaee3a2b2e3450ae3b8a54267
- facebook-domain-verification=0eeiuj5yowv67f20bui668dew3wxfd
- ms-domain-verification=b2c207a6-fc9b-4f36-be9e-9ce46be8b64e
- ms-domain-verification=eac44195-83c7-497a-93f7-76f7b6cc971e
- rKD8oqILSW1rPgVyfosJaeHouR+mjSsO2oYeyeb5CPuzbsNqUIeXkXm7YCJjo2hcFUVBeN9xAEtqNR4zMeUR/Q==
- SPFv=spf1 include:spf.protection.outlook.com include:_netblocks.mimecast.com include:_spf.hosting.cdkglobal.com include:spf.happyfox.com -all
Full email verification for jesco.us
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