Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
firstchc.org
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-26 14:11:09 UTC · ↺ Refresh
MX Hostnames
- usb-smtp-inbound-1.mimecast.com
- usb-smtp-inbound-2.mimecast.com
MX Priorities
- usb-smtp-inbound-1.mimecast.com: 10
- usb-smtp-inbound-2.mimecast.com: 10
A / AAAA Records
- 160.153.0.176 ↩ 176.0.153.160.host.secureserver.net
Mail Server IPs
- 170.10.152.242 ↩ usb-smtp-delivery-2.mimecast.com
- 170.10.150.242 ↩ usb-smtp-delivery-2.mimecast.com
SOA Record
Raw SOA
ns89.worldnic.com namehost.worldnic.com 125123112 10800 3600 604800 3600
Primary NS (mname)
ns89.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
125123112
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns90.worldnic.com
ns89.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 include:usb._netblocks.mimecast.com include:spf.protection.outlook.com ip4:160.72.95.144/28 include:mail.verity.cloud ip4:40.84.22.152 -all
📊 DNS lookups: 3/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
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
9 records- MS=ms11513652
- 0ed1fe018a6be5add44800459a83bb0387d7e23ef9
- a5ktjqv1va9t8nb7p1g95meecd
- apple-domain-verification=mlQHTFC2Hq4R8nSv
- SPFv=spf1 include:usb._netblocks.mimecast.com include:spf.protection.outlook.com ip4:160.72.95.144/28 include:mail.verity.cloud ip4:40.84.22.152 -all
- l0sd2gcsetdq9e7l8k2b85u0qa
- ojaohqolalkqr0l2on315qagv6 -aa
- t31qjitju5kk5jo59ckiijegpo
- h1ck1q3e2id0t454jeekfv8c42
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