Gregory Nowak <greg&romuald,net,eu,org> wrote:

> The author of ask has the following procmail recipe in his
> documentation:
>
> :0 fW
> |/path_to_ask/ask.py --procmail --loglevel=5
> - --logfile=/your_home/ask.log

    It sounds like the above "recipe" is set to wait for ask.py to finish,
be treated as a filter, andconsider any non-zero error code as a failure
The lowercase 'f' says that the "recipe" is to be a filtering program, and
to wait for it to finish.  The uppercase 'W' says to watch for a non-zero
error code, and to suppress any error output  I'm assuming that spam-
killer, if it finds spam, exits with a non-zero error  code.  If that
happens, then the lines below should be executed and  redirect the  mail to
/dev/null.

> :0 e
> /dev/null

    I believe that the above "recipe" only executes if the previous "recipe"
was skipped.  Why it was skipped doesn't matter, like an if/else function
call.  I guess the lowercase 'e' could be considered an 'else' statement.
Anyway, that seems to be what procmail is doing.  I don't know how you'd
write something in the mail processing program you're using.  HTH,

        Michael