What i'm hearing, is that the only way to have both high-level spam (lets say 15+ result from spamassassin) stopped at the smtp level, as well as an imap Spam folder for the lower stuff, is to process the messages twice.
I currently have spamassassin run using an xfilter in my maildroprc but as has been mentioned in this discussion, it doesn't stop the spam from arriving on my server, and doesn't try to help stop the spam from coming in.
Courier User wrote:
On Thu, May 22, 2003 at 01:11:28PM -0400, Sam Varshavchik wrote:
Courier User writes:
A courierfilter program has access to a file name which points to the message being filtered. Is it legal for the courierfilter to alter the message and rewrite this file?
No. This is due to the fact that filtering takes place after the message has been received and parsed, but before any MIME-related rewriting. For speed, messages are parsed at the same time they are received.
If the message file is modified, and Courier decides to re-MIMeify the message, the start of MIME sections will not match the parsed offsets, resulting in corruption.
Thanks.
Well, this means that it's probably not a good idea to use SpamAssassin from a courierfilter like "perlfilter" ... unless all you plan to do is to simply reject failed messages outright at that time. If the SpamAssassin results are to be queried during subsequent message processing steps, SpamAssassin would have to be re-invoked on the same message via maildrop or some ~/.courier filtering.
I can think of some convoluted ways around this:
One possibility is that I could run the messages through spamc from within my perlfilter, and for any message that is not rejected at that time, I could persist the altered message in a centrally accessable data store, keyed by its message ID. Later processing steps could look up this persisted message and process it accordingly.
I might try this, but I'm not sure how worthwhile it would be.
-- James A. Mcormond QA Specialist, Networking and Bugzilla Guy Xandros Corporation, Ottawa, Canada Simple. Compatible. Linux.
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