[K12OSN] WBEL Mail Server

[Les Mikesell]

On Tue, 2004-05-04 at 13:52, Jim Kronebusch wrote:

> Les recommended using Sendmail and MimeDefang, what does MimeDefang do
> (Antivirus or Spam)?  
> 

MimeDefang doesn't do either specifically.  It hooks into sendmail's
milter interface which lets it scan the content *before* sendmail
has given the final ACK for accepting the message.  That means
you can do things like rejecting based on content without having
to construct and return a bounce message or you can 'greylist' where
you temp_fail the first  message from unknown senders because
spammers generally don't retry while all legitimate mailers will.

MimeDefang splits out the mail attachments, then acts as a framework
to run whatever spam and virus scanners you want.  The install
procedure will automatically find SpamAssasin amd clam if you
have them installed first.  There are a few tricks to making it all
work together but it isn't too bad.

---
  Les Mikesell
   les at futuresource.com