For some time, all emails from *@gmail.com are being quarantined, even after putting gmail.com in the whitelist. The Dashboard logs page shows they are blocked by the IP DNS blocklist.
Since the emails are blocked by the IP DNS blocklist, please follow the steps in the "Determining why the IP DNS Blocklist Filter Blocked or Allowed a Message" article to obtain the sender IPs for the blocked messages, whitelist them and modify the filter priority list so that the whitelist has a higher priority than the blocklist.
Additionally, check if there are any additional blocklists added to the IP DNS blocklist configuration. Make sure you use the recommended ones, or lists that you trust, as an untrustworthy blocklist may cause the filter to allow unwanted emails or prevent legitimate emails to reach your users' mailboxes.
Review the Perimeter SMTP configuration and make sure that the list of servers specified there is up to date, in order to correctly identify inbound and outbound emails. Remove unused servers and add missing servers as needed.
Clear the IP DNS cache manually since some emails may be blocked if they are found there. After clearing the cache, revert to the default setting from the article, to ensure that MailEssentials operates optimally.
After applying the steps above, spam emails should be blocked correctly.
If the issue still persists, please generate the troubleshooting logs as follows:
- Make sure that you have tracing enabled.
- Wait for at least 30 minutes to gather enough information and for the issue to be reproduced.
- Run the troubleshooter:
- Start > Programs > GFI MailEssentials > Troubleshooter
- Follow the Log Generation Wizard for collecting the required and pertinent information.
- Select New Case when completing the log generation to attach the logs to a new case that will be automatically created, or open a support ticket manually and attach the logs to that ticket, so that the Support team can investigate the problem.