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MacMasta Guru
Joined: 18 Apr 2002 Posts: 545 Location: Anchorage, AK
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Posted: Wed Jan 15, 2003 4:26 am Post subject: Postfix & spamassassin & procmail setup and theory |
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I've done extensive google and forum searching on this, and it hasn't quite made sense yet, so here goes:
I've got a little machine that recieves and sends mail using postfix, and I want to set up spam filtering (using spamassassin) and folder re-direction and such (procmail).
The "pipeline" should look like this, as I understand it:
mail comes into system -> postfix -> procmail -> spamassassin -> procmail (for the rest of the filtering) -> ~/.maildir
I see that main.cf for postfix has a "mailbox_command" function that suggests procmail - and I know that I can call spamassassin from procmail very easily. However, every user should have their own ~/.procmailrc, right? How do I configure postfix's mailbox_command to make sure it uses the .procmailrc of the user who is receiving the mail?
I assume that I'll need to tell procmail to put things in pine's mail directory, not into directories in ~/.maildir - but that can't be too hard.
Is my understanding of the process sound? How do I correctly configure postfix?
Corollary(sp?) question: I'll be using an almost identical setup on another machine, but with fetchmail/getmail getting mail from pop3 accounts.
Does the order of events on that system look like:
1) getmail -> postfix -> procmail -> spamassassin -> procmail -> ~/.maildir
or does getmail/fetchmail bypass postix (which would require me to call procmail from .fetchmailrc or .getmailrc somehow), and result in:
2) getmail -> procmail -> spamassassin -> procmail -> ~/.maildir.
?
Thanks for the help!
~Mac~ |
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fyerk Apprentice
Joined: 17 Sep 2002 Posts: 212 Location: Atlanta, GA
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Posted: Wed Jan 15, 2003 12:21 pm Post subject: |
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I think the easiest way to do this is to have procmail as the mailbox command and then pipe incoming email through SpamAssassin on a per user basis.
/etc/postfix/main.cf
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mailbox_command = /usr/bin/procmail
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$HOME/.procmailrc
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# Procmail Recipie File
DEFAULT="$HOME/.maildir/"
MAILDIR="$HOME/.maildir/"
# Spam Detection
SPAM_FOLDER="$HOME/.maildir/.spam/"
:0 fw
| /usr/bin/spamc -f
:0
* X-Spam-Status: Yes
$SPAM_FOLDER
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Note that this assumes you're using Maildir style mailboxes (e.g. Courier-IMAP).
This also requires SpamAssassin to be running as a daemon, so you'ld need to run the following commands to start it and make sure it starts on reboot.
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# /etc/init.d/spamd start
# rc-update add spamd default
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_________________ -David |
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