Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
michaelbest.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-27 11:41:35 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 10
- us-smtp-inbound-2.mimecast.com: 10
A / AAAA Records
- 216.150.1.1 (no PTR)
Mail Server IPs
- 170.10.132.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
ns3.level3.net dnsteam.level3.com 2026030300 86400 3600 604800 900
Primary NS (mname)
ns3.level3.net
Admin Email (rname)
dnsteam@level3.com
Serial
2026030300
Refresh
86400s
Retry
3600s
Expire
604800s
Minimum TTL
900s
Nameservers (NS)
ns3.level3.net
ns4.level3.net
SPF Record
✓ Soft Fail (~all)
v=spf1 include:spf.vx-email.com include:spf.constantcontact.com include:spf.mandrillapp.com include:sendgrid.net include:us._netblocks.mimecast.com include:emailcc.com ip4:52.1.234.206 ip4:52.70.152.226 ip4:54.165.79.164 ip4:184.106.20.185 ~all
📊 DNS lookups: 6/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 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- smartsheet-site-validation=BfrTcODvFIS6V5_DTVlc4w94OWOocJl_
- nkhlcbjd8pdgqa18faj6kpr43r
- SPFv=spf1 include:spf.vx-email.com include:spf.constantcontact.com include:spf.mandrillapp.com include:sendgrid.net include:us._netblocks.mimecast.com include:emailcc.com ip4:52.1.234.206 ip4:52.70.152.226 ip4:54.165.79.164 ip4:184.106.20.185 ~all
- gLjiFrv6CE99aGpdnBcJmeyF8Ea+MnmWq+aWLCYehlqh2MFGX55YZeM+kmZUeZeS4a1dHWVwY9ZJPa5Ji7yvTQ==
- dropbox-domain-verification=tijbzfkyzkd2
- logmein-verification-code=b86d1b43-11b9-4942-b5fe-d0bf146e86fe
- box-domain-verification=752bd01766c7a2de25a46843b1216027be9d44c030432740b2841a0d37631ca7
- ekorncii52spr9gnj90i1uopq0
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