On 2/7/07, Vini Engel <[EMAIL PROTECTED]> wrote: > Hi Lisa, > > > I would like to perform spam and virus filtering using a combination > > of Mailscanner, Spamassassin and ClamAV. > > > > I had originally intended building a scanning gateway, but having read > > the archives here I don't think this is a good idea. > > In my opinion if you have a very high volume of messages it is a good way to > go. You could for example centralise your user database and use LDAP to > connect the various components of your email "cluster." This way you can > distribute the load across as many servers as you need and with courier it is > very easy to implement as the LDAP support in courier is *excellent*. > > So if you do have a very high volume of emails do consider building a scanning > gateway.
The gateway approach appeals to me on more grounds than just scalability, because I'm migrating the mailserver from a postfix/cyrus setup to courier, and I can use the gateway to cleanly decommission the old mailserver too. There is just a backscatter risk to avoid, eg, if the mailserver is down, make sure that the gateway actually queue's the messages if it accepts them. > > The maildroprc given here doesn't make any sense to me at all. > > What doesn't make sense there? The way he calls spamassassin seems pretty > normal to me. You can use xfilter to call an external program and then you > can do further processing on the message based on the score. I put the > messages with score higher than 6.5 in a folder called spam. Messages on this > folder expire in fifteen days. I was looking for a hand off to spamassassin and a re-entry to courier / maildrop. Too much reading into mailscanner I'm afraid, makes perfect sense now. > > 2) Archive spam on the other machine for release > > 3) Automatically return what is determined to be ham back to courier. > > You can use DSPAM to do what you want as well, it is pretty good. I am > implementing it at the moment, it has quarantine. > > > Is there documentation that someone could point me to for this, or a > > setup that I can research. I'm getting nowhere with google apart from > > the above link but its more like a recipe that I won't understand than > > a documented approach. > > If you read Courier's documentation and DSPAM's and learn LDAP if you haven't > yet you will get enough background to do what you want. I'm well in touch with ldap and ldap admin. This DSPAM looks like a much better solution than mailscanner even if it doesn't handle blacklists and virus scanning, but i can fill those two gaps easily enough myself directly with courier, and DSPAM works with courier, so i can make my gateway with courier and drop postfix. Many thanks for the heads up on this! Lisa. ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ courier-users mailing list [email protected] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
