On Sunday, 25.09.2005 at 15:34 -0500, Seth Goodman wrote: > > Well, yes: but that applies regardless of whether you've launching > > it from procmail or not :-) > > Well, not exactly. I don't know enough about Exim to know if it can > operate this way, but if you do your AV/content filtering during the > SMTP transaction, you can reject with a 550 at the end of data. That > is a lot better than silently discarding messages after accepting > them. Yes, that keeps the TCP connection open a long time, but for a > small to medium sized system, that should not be a big issue. > > The real savings is in rejecting before data based on a variety of > measures, terminating the connection much sooner and saving a lot of > bandwidth. If you do enough of that, you can cut down the number of > messages that you allow to go into data, and thus require AV/content > filtering, to the point that it is much less of a load on the system. This is all true, of course, but has drifted a *long* way from what the OP was asking. I was merely pointing out that you *can* filter post-MTA acceptance ... Dave. -- Please don't CC me on list messages! ... Dave Ewart - davee@sungate.co.uk - jabber: davee@jabber.org All email from me is now digitally signed, key from http://www.sungate.co.uk/ Fingerprint: AEC5 9360 0A35 7F66 66E9 82E4 9E10 6769 CD28 DA92
Attachment:
signature.asc
Description: Digital signature