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Clearbox troubleshooting guide

Common problems​

Can't receive mail​

  • Check MX records and DNS propagation
  • Verify domain verification status in Admin → Domains. If your domain is managed by Dotsync, confirm that automatic DNS configuration is enabled so Clearbox can publish SPF/DKIM/DMARC records automatically.

Can't send mail​

  • Check SMTP settings and outbound rules
  • Check SPF, DKIM, and DMARC records

Login issues​

  • Reset password from account recovery
  • Check that the account is not suspended

Performance​

  • Check mailbox quotas and purge large archives

Logs & support​

If the problem persists, gather message IDs and timestamps and contact support with logs.

Related: support, administration-and-users