Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
whasn.com
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-19 12:24:13 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
- 104.21.91.66 (no PTR)
- 172.67.211.87 (no PTR)
- 2606:4700:3037::6815:5b42 (no PTR)
- 2606:4700:3033::ac43:d357 (no PTR)
Mail Server IPs
- 170.10.150.242 ↩ usb-smtp-delivery-2.mimecast.com
- 170.10.152.242 ↩ usb-smtp-delivery-2.mimecast.com
SOA Record
Raw SOA
houston.ns.cloudflare.com dns.cloudflare.com 2397250095 10000 2400 604800 1800
Primary NS (mname)
houston.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2397250095
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
margot.ns.cloudflare.com
houston.ns.cloudflare.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:64.124.74.98 include:usb._netblocks.mimecast.com include:spf.protection.outlook.com include:spf.exclaimer.net include:mailgun.org -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 2 found
s1._domainkey
s2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: s1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
3 records- 0ed1fe018a0c350297ada8419d88d93014fb30ee78
- sophos-domain-verification=b0917d4b58c30d760c39eebdcd6dab74b57e9f46
- SPFv=spf1 ip4:64.124.74.98 include:usb._netblocks.mimecast.com include:spf.protection.outlook.com include:spf.exclaimer.net include:mailgun.org -all
Full email verification for whasn.com
Run SMTP check, SPF/DKIM/DMARC and catch-all detection.
SPF / DKIM / DMARC Get 1,000 Free Credits