Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gbmc.org
Yes
✓ Yes
Mimecast
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-23 19:33:32 UTC · ↺ Refresh
MX Hostnames
- us-smtp-inbound-2.mimecast.com
- us-smtp-inbound-1.mimecast.com
MX Priorities
- us-smtp-inbound-2.mimecast.com: 10
- us-smtp-inbound-1.mimecast.com: 10
A / AAAA Records
- 23.185.0.3 (no PTR)
- 2620:12a:8000::3 (no PTR)
- 2620:12a:8001::3 (no PTR)
Mail Server IPs
- 170.10.128.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.128.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.141 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.242 ↩ us-smtp-inbound-2.mimecast.com
- 170.10.132.221 ↩ us-smtp-inbound-1.mimecast.com
- 170.10.128.221 ↩ us-smtp-inbound-2.mimecast.com
SOA Record
Raw SOA
ns97.worldnic.com namehost.worldnic.com 126022008 10800 3600 604800 3600
Primary NS (mname)
ns97.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
126022008
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns98.worldnic.com
ns97.worldnic.com
SPF Record
✓ Strict (-all)
v=spf1 ip4:65.111.72.31 ip4:63.251.143.30 ip4:64.74.110.101 ip4:192.254.121.248 ip4:54.240.43.16 ip4:138.69.224.43 ip4:138.69.224.69 include:us._netblocks.mimecast.com include:spf.mandrillapp.com include:servers.mcsv.net include:_spf.psm.knowbe4.com include:volgistics.com include:mailsender.badgecert.com include:secure.giftlegacy.com include:spf.protection.outlook.com -all
📊 DNS lookups: 8/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
4 records- cisco-ci-domain-verification=277f7714306db2f11b695d63048071dff4a763e215f708b85f12fb4ffc9dfb96
- apple-domain-verification=D6ziXA0OBlQps9ZQ
- SPFv=spf1 ip4:65.111.72.31 ip4:63.251.143.30 ip4:64.74.110.101 ip4:192.254.121.248 ip4:54.240.43.16 ip4:138.69.224.43 ip4:138.69.224.69 include:us._netblocks.mimecast.com include:spf.mandrillapp.com include:servers.mcsv.net include:_spf.psm.knowbe4.com include:volgistics.com include:mailsender.badgecert.com include:secure.giftlegacy.com include:spf.protection.outlook.com -all
- duo_sso_verification=jWeL1s7klVVuGmPuKZfOOBMdTOwAXECONHAjsrr9nItZcOa23QfRFpSYmxIMxwmg
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