> I do not want to touch the queue files. Well, I am developing an
> application for MMS which uses SMTP protocol. When a request msg is sent
> sometimes the destination MMSC does not answer or answer too late. In
> this case I need to close my context and to send an acknowledgement to
> the origin MMSC. But with sendmail I do not know if the request msg is
> delivered or still in postfix queue and I do not want to close my
> context if the msg is still in queue. That is the reason I try to find a
> mechanism to get postfix filename.
With SMTP you only know that the SMTP server has RECEIVED the
message. You don't know that the message is delivered.