I too am using SpamAssassin (and Anomy Sanitizer for viruses) with Postfix and Maildrop. I have some modifications to Maildrop which enables messages to be placed in a mailbox, such as the Inbox, tagged for deletion. Then with any IMAP client, including a Web-mail IMAP client, this is an easy way of seeing suspected spam, mailing list messages which have already been copied to their own mailbox etc. in the Inbox, as they arrive, but with an easy way of getting rid of them, without manually selecting them for deletion:

http://www.firstpr.com.au/web-mail/

I use the "tagged for deletion" thing for mailing list messages. Suspected spam and anything detected by Anomy Sanitizer as having a Windows executable as an attachment gets put into the spam pit or virus pit, and is not sent to the Inbox at all.

This is only for myself. I hand-craft the mailfilter file in a text editor / occasionally making syntax mistakes such as a blank line with lack of a \ continuation, which really screws things up. I am *very* happy with the results.

One thing I want to do is sort spam, as flagged by SpamAssassin, into two mailboxes. One would be for the high-scoring spam and another for the stuff which is close to my threshold. Then, to search for false positives, I will only have to trawl through a subset of the flagged messages.

- Robin