Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
mckinstry.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 20:50:26 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 20
- us-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 141.193.213.21 (no PTR)
- 141.193.213.20 (no PTR)
Mail Server IPs
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
ns03.gcd-dns.com dns.jomax.net 2026030500 28800 7200 604800 600
Primary NS (mname)
ns03.gcd-dns.com
Admin Email (rname)
dns@jomax.net
Serial
2026030500
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns03.gcd-dns.com
ns04.gcd-dns.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:68.233.77.18 ip4:68.233.76.38 ip4:147.154.97.253 include:spf.ess.barracudanetworks.com include:us._netblocks.mimecast.com include:sendgrid.net include:_spf.salesforce.com include:spf.protection.outlook.com include:_spf.createsend.com -all
📊 DNS lookups: 6/10
✓ 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
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 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
6 records- anthropic-domain-verification-4gfk01=pug7LZ6L5iadseINcmCVi9tBG
- openai-domain-verification=dv-K6155LTVqMc1C2pxFnlFxhMN
- TAILSCALE-nSwi6rMOWWh9EDlndF5l
- ZOOM_verify_0aoCgYcJ4JJMBEqrwXJuHv
- SPFv=spf1 ip4:68.233.77.18 ip4:68.233.76.38 ip4:147.154.97.253 include:spf.ess.barracudanetworks.com include:us._netblocks.mimecast.com include:sendgrid.net include:_spf.salesforce.com include:spf.protection.outlook.com include:_spf.createsend.com -all
- google-gws-recovery-domain-verification=67170142
Full email verification for mckinstry.com
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