Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
maintenanceinc.net
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-04-04 07:59:25 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 10
- us-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 198.49.23.145 (no PTR)
- 198.49.23.144 (no PTR)
- 198.185.159.145 (no PTR)
- 198.185.159.144 (no PTR)
Mail Server IPs
- 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.242 ↩ 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
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
ns1.carrierzone.com postmaster.carrierzone.com 2026033014 86400 86400 3600000 86400
Primary NS (mname)
ns1.carrierzone.com
Admin Email (rname)
postmaster@carrierzone.com
Serial
2026033014
Refresh
86400s
Retry
86400s
Expire
3600000s
Minimum TTL
86400s
Nameservers (NS)
ns4.carrierzone.com
ns3.carrierzone.com
ns1.carrierzone.com
ns2.carrierzone.com
SPF Record
✓ Strict (-all)
v=spf1 a mx include:us._netblocks.mimecast.com include:_spf.myteamasp.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
4 records- MS=ms29857747
- SPFv=spf1 a mx include:us._netblocks.mimecast.com include:_spf.myteamasp.com -all
- gehjkpa3bttheoj5pb9449mubv
- MS=ms26272605
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