Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
mastermechanicalservices.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-19 12:45:57 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: 20
A / AAAA Records
- 104.21.51.187 (no PTR)
- 172.67.184.35 (no PTR)
- 2606:4700:3030::6815:33bb (no PTR)
- 2606:4700:3031::ac43:b823 (no PTR)
Mail Server IPs
- 170.10.128.141 ↩ 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
- 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
sara.ns.cloudflare.com dns.cloudflare.com 2398575001 10000 2400 604800 1800
Primary NS (mname)
sara.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2398575001
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
simon.ns.cloudflare.com
sara.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:50.73.6.81 include:spf.protection.outlook.com include:_netblocks.mimecast.com ~all
📊 DNS lookups: 2/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1;p=none;pct=100;rua=mailto:[email protected];ruf=mailto:[email protected];ri=86400;fo=1
⚠ p=none — monitoring only, no enforcement
📋 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
2 records- MS=ms50175746
- SPFv=spf1 ip4:50.73.6.81 include:spf.protection.outlook.com include:_netblocks.mimecast.com ~all
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