Erick Calder:
> On Sep 24, 2009, at 4:21 PM, Wietse Venema wrote:
>
> > If Postfix announces a size limit of X, many SMTP clients won't
> > attempt to send larger messages, and Postfix won't accept a larger
> > message (and thus Postfix will not generate a bounce email message).
> >
> > If you must configure Postfix to accept messages larger than X,
> > (and then return it to the sender) then you would have to use a
> > content filter to return the message with custom text. Postfix
> > does not have different templates for different error types; it
> > only distinguishes between delayed mail and other errors.
>
> that had been my hope: that I could just find the template used to
> reject mail on the basis of size. I imagine Postfix does do that
> (reject on the basis of size) since it would be unsafe to assume the
> clients respect the stated limit.
The Postfix SMTP server discards mail that exceeds the configured
size limit, and responds with a 5XX status at end-of-data, meaning
that it did not accept the message.
Wietse
