I am proposing a sync between multiple Incoming Gateways for Greylisting. Right now I use a couple and have used up to 4 SmarterMail incoming mail gateways to process all the mail for spam/viruses before delivering it to the mail SmarterMail Mail Server.
But if one of the incoming mail servers, refuses the email due to Greylisting and tells it to check back after X amount of seconds, and when they retry, usually they get another Incoming Mail Gateway, that doesn't know they tried already.
So in short, can the greyList.dat file be synced between all the mail servers?
This would be a welcomed change in my eyes.