How do I setup ISMail to use Greylisting?
• Select the ‘Greylist’ checkbox • Click Apply To change the Greylist options: • Click the ‘Options’ button • Set the Initial Block Period to the number of minutes to block messages with unlisted IP/sender/receiver values. The default is 60 minutes. If set to 0, messages will be delivered more quickly, but Greylisting may be less effective • Set the Block Period Lifetime to the number of minutes that an unlisted IP/sender/receiver will be temporarily stored pending another message with the same IP/sender/receiver values. After this period, the record will be deleted and the IP/sender/receiver must again pass through the Greylist filter. The default is 240 minutes (4 hours). • Set the Pass Record Lifetime to the number of days that a listed IP/sender/receiver will remain valid. During this period, messages with the same IP/sender/receiver will always pass through the Greylist filter.
