Well I’m using spambayes to do spam filter work, and it does do its work well: It will only move the mails it’s sure are spams to the spam folder, and the mails it’s sure are not spam to the non-spam folder. And something in between to the unsure folder.
For me it did let one or two spam pass the filter and caught my eyes once or twice a year, but it’s never put my real mails into the spam folder. And for the unsure mails, there are really not too much of them: I used to check it once a week and it turns out OK.
Spambayes don’t have a white list by itself and I think that’s a good design decision: nowadays some virus will use your friends contact list and send your garbage. So even mails from someone you trust might be a spam and need to go through the filter.
But for once or twice a month, it do through some of my important mails to the “unsure” folder, which makes me unhappy. So, what to do if you think someone’s mail is so important, that you would check it anyway no matter if it is a spam or not?
For me, I also use ImapFilter to filter my mails (I’m on lots of mail lists so this is necessary), and I’ve configured it to run after spambayes, so only those mails are not spam-like got filtered to the right folder. And now, I also use it to check the “unsure” folder, and if there’s a mail from someone that important, the mail will be moved to the right folder so I’ll see it anyway.
So, a forced white list for spambayers 
This is the spirit of Unix: Every tools do one work, and do it well, and I can combine these tools to do whatever I want
Tags: freebsd, IMAP, imapfilter, mail, spam, spambayes, virus
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