In an older episode (Thursday 21 April 2005 22:45), Chr. von Stuckrad wrote: > On Thu, Apr 21, 2005 at 03:37:02PM -0500, Michael Parker wrote: > > 1) Don't accept mail for invalid users. > > Well, I often tought about not accepting Mail *FROM* locally-illegal-Users. > The 'To' is done by the MTA, but the 'From' would be nice also. > It would drop all the spams faking random local Users as SENDER.
IMHO, SA is not the tool for that. instead of using SA for that purpose, i'd suggest to generate a list of valid users on the MTA or transfer it to the MTA. grant them access in some lookup table (be it as envelope senders and/or in From: headers) deny sender access to [EMAIL PROTECTED] run some header check if you want to deny them in From: headers also. in my view, thats more of a topic for a list of users of the MTA of your choice. regards, wolfgang
