"Mark Gebhardt" <[EMAIL PROTECTED]> wrote:
>A central requirement of the mailing engine is that it can be used to
>track the delivery status of messages through the system (i.e. if I send
>message A and then message B to [EMAIL PROTECTED] and message A bounces,
>whilst message B is received, I need to know this via logs/API whatever).
>
>It seems that qmail and Postfix are by far the best performing MTAs for
>Linux, so the differentiating factor for us will be which can provide our
>required functionality with the minimum of modification.
Both qmail and Postfix log complete delivery information including all
sucessful and failed delivery attempts.
Depending upon your application, you might be able to take advantage
of qmail's variable envelope return path (VERP) mechanism, which
allows reliable bounce processing by encoding the bouncing address in
the return address.
-Dave
