Overview
You may need to clear two DNS blacklist cache entries depending on which filter is blocking the emails.
This article provides the steps to clear the blacklist cache entries for the following:
Process
NOTE: This is not a full purge of the listed blacklist entries. This process clears everything older than one hour to remove any entries that may have caused issues without entirely deleting the list, as this could cause excess spam to be allowed.
IP DNS Blacklist
- Stop all the GFI services and the IIS Admin service.
- Go to Start > Run > Type
services.msc> Hit Enter.
NOTE: This temporarily stops your email flow. - Browse to the
MailEssentials\AntispamDirectory. - Back up
config.mdb. - Open
config.mdbin Microsoft Access. - Open the
Antispam2table. - Change the
orcachettivalue to3600000. This value contains the number of milliseconds that the cache will be held in memory. 3600000 is equal to 1 hour. The default value is 345600000 (4 days). - Close the
Antispam2table and theconfig.mdbdatabase. - Start the services stopped in step 1.
URL DNS Blacklist
- Stop all the GFI services and the IIS Admin service.
- Go to Start > Run > Type
services.msc> Hit Enter.
NOTE: This temporarily stops your email flow. - Browse to the
MailEssentials\AntispamDirectory. - Back up
config.mdb. - Open
config.mdbin Microsoft Access. - Open the
surbl_configtable. - Change the
sublecachettlvalue to3600000. This value contains the number of milliseconds that the cache will be held in memory. 3600000 is equal to 1 hour. The default value is 345600000 (4 days). - Close the
surbl_configtable and theconfig.mdbdatabase. - Start the services stopped in step 1.
NOTE: Once the cache has been cleared, leave the filter running for 1 hour, and then repeat the process to return it to the default value of 345600000 (to maintain performance).