Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
howardbuilding.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 20:37:13 UTC · ↺ Refresh
MX Hostnames
- usb-smtp-inbound-2.mimecast.com
- usb-smtp-inbound-1.mimecast.com
MX Priorities
- usb-smtp-inbound-2.mimecast.com: 10
- usb-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 198.202.211.1 (no PTR)
Mail Server IPs
- 170.10.150.242 ↩ usb-smtp-delivery-2.mimecast.com
SOA Record
Raw SOA
ns1-03.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300
Primary NS (mname)
ns1-03.azure-dns.com
Admin Email (rname)
azuredns-hostmaster@microsoft.com
Serial
1
Refresh
3600s
Retry
300s
Expire
2419200s
Minimum TTL
300s
Nameservers (NS)
ns4-03.azure-dns.info
ns1-03.azure-dns.com
ns2-03.azure-dns.net
ns3-03.azure-dns.org
SPF Record
✓ Strict (-all)
v=spf1 ip4:137.22.227.19 ip4:137.22.228.37 ip4:137.22.228.47 ip4:137.22.225.98 ip4:167.89.24.90 ip4:167.89.23.21 ip4:167.89.22.86 ip4:167.89.36.250 include:mail.zendesk.com include:sendgrid.net include:spf.protection.outlook.com include:usb._netblocks.mimecast.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; fo=1
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 5 found
selector1._domainkey
selector2._domainkey
k1._domainkey
s1._domainkey
s2._domainkey
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- MS=ms90895317
- 0ed1fe018a27bc98aa9f1d41ee906869d07684a494
- SPFv=spf1 ip4:137.22.227.19 ip4:137.22.228.37 ip4:137.22.228.47 ip4:137.22.225.98 ip4:167.89.24.90 ip4:167.89.23.21 ip4:167.89.22.86 ip4:167.89.36.250 include:mail.zendesk.com include:sendgrid.net include:spf.protection.outlook.com include:usb._netblocks.mimecast.com -all
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