Michael: > I want to deploy a system whereby it will do an SQL lookup and depending on > the result will either continue processing the message as per usual or issue > a 'temporary' reject (Ie: Over quota message). > > This is on a relaying/gateway machine so it does not have direct access to > the > mail queue to do it's own calculation so would need to work it out based on > information available from an SQL table.
Pointers: A) Use an SQL-based access table that is queried at SMTP time: http://www.postfix.org/access.5.html http://www.postfix.org/mysql_table.5.html B) Use a policy server that queries the database and does the calculation: http://www.postfix.org/SMTPD_POLICY_README.html Wietse
