[EXIM] pipe command

Hi

I have the following entry in my alias file

iqbalbounce: "/usr/bin/mailbot.pl messagefile"

however when I try to use it via exim (works fine from command line, the
mailbot proggie) it get a bounce back (not the one i want) saying that
there is "No pipe transport set" Or something to that affect.

Do I have to set pipe transport for each user I want a autoresponder set
for.

Iqbal

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