MailEssentials is blocking legitimate emails containing safe URLs. These emails are identified as SPAM by the SpamRazer Anti-Spam filter and the block reason states: "URL is in DNSBL". The Whitelist is above SpamRazer in the Filter Priority list.
With tracing enabled, the SpamRazer logfile
..\GFI\MailEssentials\Antispam\DebugLogs\ase_spamrazer.gfi_log.txt shows the following:
2020-09-10,13:05:46,393,1,"#00009c7c","#00008ac4","info ","ase_spamrazer","(Score) [0x14E80FD0] (100%) URL is in DNSBL "
If this happens and a trusted sender's email containing a safe URL is blocked by the SpamRazer filter stating that the URL is in the DNSBL, and the SpamRazer definitions are up-to-date, the only solution is to disable SpamRazer, as this is a third party list that cannot be updated from within MailEssentials.
With this filter disabled, please make sure that you have the IP DNS Blocklist enabled and configured correctly, as described in the "How to configure the IP DNS Blocklist filter" article, to minimize the risk of spam messages reaching the users' mailboxes.
After disabling the SpamRazer filter, legitimate emails should not be blocked anymore.
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.