Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
groundmastersls.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-21 14:25:15 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
- 172.67.146.14 (no PTR)
- 104.21.79.141 (no PTR)
- 2606:4700:3030::ac43:920e (no PTR)
- 2606:4700:3034::6815:4f8d (no PTR)
Mail Server IPs
- 170.10.128.141 ↩ us-smtp-inbound-1.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-1.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
guss.ns.cloudflare.com dns.cloudflare.com 2397098891 10000 2400 604800 1800
Primary NS (mname)
guss.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397098891
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
guss.ns.cloudflare.com
lara.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:us._netblocks.mimecast.com ip4:207.188.14.161 include:spf.protection.outlook.com ~all
📊 DNS lookups: 2/10
~ 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
✓ 1 found
dkim._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: dkim
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
6 records- MS=ms36635201
- 0ed1fe018aa4ed80102ab94b97a7eb7f6e0b9e06f7
- MS=ms91796011
- google-site-verification=F-TiRMKGvXnoPPkDjySJtn8gvJh4givHCf-DYaBNB3U
- SPFv=spf1 include:us._netblocks.mimecast.com ip4:207.188.14.161 include:spf.protection.outlook.com ~all
- apple-domain-verification=ufNBbExuTT5xIqFc
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