Quote:
Originally Posted by padraig  Thanks dwmtractor,
ran /opt/zimbra/bin/zmtrainsa user@domain.com spam folderName from CLI zmtrainsa - Zimbra :: Wiki
manually & learned 30 messages from 34.
i see zmtrainsa in in the zimbra crontab 0 23 * * * /opt/zimbra/bin/zmtrainsa >> /opt/zimbra/log/spamtrain.log 2>&1
does this mean the system would learn these anyway 
TIA |
Yes and no. According to everything I've read on these forums, if you drag a message into your junk folder using an IMAP client, it will never hit spam training. So whatever the cron'ed version of zmtrainsa is doing, it is apparently not that (although I have never understood why it couldn't).
Any message you mark as junk using your webclient will be used to train your filters. However, any message that gets to the junk folder through other means (it gets a high enough score on the RBLs for example) is not going to influence your Bayesian filters at all. The only other way to train the filters is to forward the spam messages AS ATTACHMENTS to your automatically-created spam training account. This is the only way for POP clients.
Did you (at the time of setup or since) also train your filters with some ham? Conventional wisdom is that you need to have trained the system with at least 200 messages of each spam and ham before the filters have enough to go on to really make a difference (in my case that was easy, I have two users who between them get over 300 spam messages a day). How long has your server (with spam filtering activated) been operational?
The most important messages for you to get into your Bayesian filters, of course, are any that are not getting recognized as spam anyway. Be sure that your users know to either forward these false negatives to the spam training account, or put them in a folder upon which you can run zmtrainsa, NOT just delete them. In my installations it only took a couple of days to get reliably-trained filters by these methods.
Dan