On Thu, Mar 24, 2005 at 02:05:50PM -0500, Marc Sherman said: > >>don't generate any bounce; the _only_ text you get to specify is in the
> >>5xx reason string. If a bounce is generated, it will be generated by
> >>the originating MTA.
>
> Just to follow up on this, I've been experimenting with my own spam
> rejection system today, and discovered that at least Exchange severely
> limits the size of the text it will display in a bounce caused by a 550:
That's not bad. Some don't pass it on at all.
But the bigger problem is that users DO NOT READ the text of a
rejection notice even IF they get it in the first place.
Consider the text as Bonus info, but don't rely on it.
