Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
tdhcd.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-29 15:59:08 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
- 151.101.66.159 (no PTR)
Mail Server IPs
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
ns1-35.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-35.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns3-35.azure-dns.org
ns4-35.azure-dns.info
ns1-35.azure-dns.com
ns2-35.azure-dns.net
SPF Record
✓ Soft Fail (~all)
v=spf1 mx a include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:spf.securence.com include:_spf.safewebservices.com include:sendgrid.net ip4:167.68.0.0/16 ~all
📊 DNS lookups: 7/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
dkim._domainkey
s1._domainkey
s2._domainkey
✓ 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- 9qCvW4dOHZKtE+cthPvLkp46uFARRKGWDBeUcvP0ACLE22HQrABB8R6CH9SlC4UFk585ofsfExOJuplUlGYH+w==
- 0ed1fe018a5f6de155e334470eb2c2884d77558989
- udn1cekb0mboc953snhg05bnlj
- SPFv=spf1 mx a include:us._netblocks.mimecast.com include:spf.protection.outlook.com include:spf.securence.com include:_spf.safewebservices.com include:sendgrid.net ip4:167.68.0.0/16 ~all
- ni9tt353pfh6ct246a34n0q1ge
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