On Fri, 7 May 2004, Antony Stone wrote: > On Friday 07 May 2004 2:14 pm, Mike Lambert wrote:
> > If I understand MailScanner correctly, the mta must accept the message > > before passing to MailScanner for processing. > > That is true. > > > If you don't mind > > accepting every single message, MailScanner would be fine. If, like me, > > you prefer to 5xx reject messages that you don't like (virus, spam, > > whatever), a milter is required for sendmail. MimeDefang would offer > > similar functionality to MailScanner, but operate during the smtp > > session, not after your mta has accepted the message. > > But, what is the advantage of this? It does not reduce your bandwidth by > avoiding transfer of unwanted emails, since your milter has to see enough of > the content to decide not to accept it. The advantage is sending a 5xx reject instead of a 2xx "message accepted for delivery" to the connecting mta. It is now up to the connecting mta to deal with the message. It does reduce bandwidth if you reject before receiving the whole message. I don't know if clamav does this, but if it can, it should. > I can't think of any benefit in rejecting the message rather than > receiving it and discarding it? Again, the advantage is sending 5xx instead of 2xx. IMO, giving the connecting mta a status code appropriate to the message disposition is better than simply accepting _all_ messages only to drop some later (I do not consider generating a separate "bounce" message to be an option). The sending mta should deal with rejected messages, not the receiving (rejecting) mta. -- Michael Lambert Systems Admin, IT Dept JEOL USA Inc http://www.jeol.com ------------------------------------------------------- This SF.Net email is sponsored by Sleepycat Software Learn developer strategies Cisco, Motorola, Ericsson & Lucent use to deliver higher performing products faster, at low TCO. http://www.sleepycat.com/telcomwpreg.php?From=osdnemail3 _______________________________________________ Clamav-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/clamav-users
