Domain Overview
DNS: ✓ 6h ago
Checker: ✓ 6h ago
gruber.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-20 18:46:18 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-1.mimecast.com
- us-smtp-inbound-2.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 20
- us-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 162.214.96.40 ↩ gru.grubersandbox.com
Mail Server IPs
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
ns1.grubersandbox.com ben.gruber.com 2026041305 3600 1800 1209600 300
Primary NS (mname)
ns1.grubersandbox.com
Admin Email (rname)
ben@gruber.com
Serial
2026041305
Refresh
3600s
Retry
1800s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
ns1.grubersandbox.com
ns2.grubersandbox.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:162.214.96.40 include:spf.protection.outlook.com include:_netblocks.mimecast.com -all
📊 DNS lookups: 2/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; sp=none; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1; adkim=s; aspf=s
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Strict
· DKIM alignment: Strict
📧 Reports → mailto:[email protected]
↳ Subdomain policy: none
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._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
4 records- SPFv=spf1 ip4:162.214.96.40 include:spf.protection.outlook.com include:_netblocks.mimecast.com -all
- google-site-verification=GqcmW89nBvw3CKtSTzray63HvSkspIGnv1W6sg4ucKk
- 0ed1fe018a11083aa22d3440bc88193c4127eb36bc
- gukrineje5gte0nk4mgegt3p24
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