On 3/14/2013 4:44 AM, Muhammad Yousuf Khan wrote: > i was just trying to understand LDA my understanding with postfix is > that postfix is an MTA and procmail is an LDA to deliver email however > i am using postfix alone and it is working great. it work with both > system user and virtual users with no issue. it receive email and drop > it to virtual user directory or system user directory. > so my question if postfix delivering the message to all the users then > what is the need of procmail/LDA?
The inbuilt Postfix delivery agent is very basic. It simply writes the message to the mailbox, either mbox or maildir format. It does not have delivery rules, nor a filtering language, and cannot sort messages into IMAP folders, etc. Procmail and Dovecot LDA can do these things, as well as others. -- Stan
