We will allow Dovecot users to categorize mail as Spam by placing them in user-specific Spam mailboxes. Contrary moving a message flagged as Spam to any other mailbox will relearn it as Ham. IMAPSieve...

Spam filtering Some mailing-lists tend to be more spammy than others. If we put a Sieve spam filter before they are handled by the rest of the script, we can fish for bad guys before they get filed. #...