Domain Overview
DNS: ✓ 1mo ago
Checker: ✓ 1mo ago
uscib.org
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-06-18 22:21:05 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-1.mimecast.com: 10
- us-smtp-inbound-2.mimecast.com: 10
A / AAAA Records
- 66.42.67.43 ↩ 66.42.67.43.vultrusercontent.com
Mail Server IPs
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-1.mimecast.com
SOA Record
Raw SOA
ns41.cloudns.net support.cloudns.net 2026050715 7200 1800 1209600 3600
Primary NS (mname)
ns41.cloudns.net
Admin Email (rname)
support@cloudns.net
Serial
2026050715
Refresh
7200s
Retry
1800s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
pns44.bigheadwebhost.com
pns41.bigheadwebhost.com
pns42.bigheadwebhost.com
pns43.bigheadwebhost.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:207.211.30.40/32 ip4:144.202.55.205 a:uscib.org include:_netblocks.mimecast.com include:spf-us.emailsignatures365.com include:spf.sendinblue.com include:spf.brevo.com include:spf.protection.outlook.com -all
📊 DNS lookups: 6/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
~ Quarantine
v=DMARC1; p=quarantine; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected]
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected],mailto:[email protected]
DKIM Selectors
✓ 1 found
mail._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: mail
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- MS=ms86333445
- BopmfzCn9LSJAK16VApDds1e5lv/CFC9BW+OiFUybH74ZyjI2kONzkOu6LOzBeiX/Hh1APF7uNtCvvvhPO9ooA==
- SPFv=spf1 ip4:207.211.30.40/32 ip4:144.202.55.205 a:uscib.org include:_netblocks.mimecast.com include:spf-us.emailsignatures365.com include:spf.sendinblue.com include:spf.brevo.com include:spf.protection.outlook.com -all
- amazonses:eq2ecEhGTR0t+G3liaBXYQH24J7216UnLYUIWQ/y6ew=
- brevo-code:493ba9b612ae7e1ba824f274221745d8
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