Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
mdsbuilders.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-23 03:35:12 UTC · ↺ Refresh
MX Hostnames
- mx1-us.emailsecurity.app
- mx2-us.emailsecurity.app
MX Priorities
- mx2-us.emailsecurity.app: 0
- mx1-us.emailsecurity.app: 0
A / AAAA Records
- 209.38.172.41 (no PTR)
Mail Server IPs
- 172.212.4.33 ↩ mx1-us.emailsecurity.app
- 40.121.188.167 ↩ mx1-us.emailsecurity.app
SOA Record
Raw SOA
ns61.domaincontrol.com dns.jomax.net 2025073103 28800 7200 604800 600
Primary NS (mname)
ns61.domaincontrol.com
Admin Email (rname)
dns@jomax.net
Serial
2025073103
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
600s
Nameservers (NS)
ns61.domaincontrol.com
ns62.domaincontrol.com
SPF Record
✓ Strict (-all)
v=spf1 include:spf.protection.outlook.com include:panteratools.com include:SendGrid.net -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1;p=reject;rua=mailto:[email protected],mailto:[email protected],mailto:[email protected];ruf=mailto:[email protected],mailto:[email protected],mailto:[email protected];fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._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
2 records- SPFv=spf1 include:spf.protection.outlook.com include:panteratools.com include:SendGrid.net -all
- google-site-verification=Fz0MN11Ffb1Exp0ikRJWAoa0jNYS_9ra-Nz2gee4-0g
Full email verification for mdsbuilders.com
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