> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of > Abigail Marshall > Sent: Friday, August 22, 2003 4:35 PM > To: Paul Adams > Subject: Re: [SAtalk] big attachments taking too long to process > > > > > Hello Paul, > > Wednesday, August 20, 2003, 8:37:30 PM, you wrote: > > PA> This has happened a few times: when a message is retrieved from the > PA> upstream POP server with a large attachment (100K), my local copy of SA > PA> takes 50 seconds or so to process it. I am using Procmail to filter > PA> deliver the messages locally -- not passing them on to another MDA. > > 1. Limit the size of the files going to SA, via the procmail > call: > >
The following thread may be of interest: http://sourceforge.net/mailarchive/message.php?msg_id=5079393 In that test, I found that excerpting the first and last 7500 bytes of the message, for messages whose length was >= 15000 yielded an accurate determination of spam with no additional false negatives (ie, no additional spam tagged as ham). Excerpting text from both the beginning and end of the message was superior to truncating the message at the same total length. The procmail rule might look like this: # Filter small messages the regular way :0fw:spamassassin.lock * ! > 14999 | spamassassin # Otherwise, just test an excerpt, and deliver spam # directly into big-spam.mbox. :0E: ? (head -c 7500; echo ""; tail -c 7500) | spamassassin -e big-spam.mbox Note above, that in the case that message is large, we run SA with the '-e' switch, to simply test the excerpted message, and if it tests as spam, then it is directly deposited in the big-spam.mbox. In this case, no spam report is produced, and similarly all non-spam (ie, ham) messages of 15000 bytes or greater length will not have an X-Spam-Status header, or any other SA headers. That's because we're operating only on an excerpt of the entire message, and we don't want that excerpt to become the result of a filter -- otherwise we eliminate message content, which is needed in both the spam and ham cases. With some more work, we can change the recipe to save the header info. that resulted when running the message excerpt through SA, and we can even add the spam report back but it is rather complicated. ------------------------------------------------------- This SF.net email is sponsored by: VM Ware With VMware you can run multiple operating systems on a single machine. WITHOUT REBOOTING! Mix Linux / Windows / Novell virtual machines at the same time. Free trial click here:http://www.vmware.com/wl/offer/358/0 _______________________________________________ Spamassassin-talk mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/spamassassin-talk
