On Thu, 8 Dec 2005, Kjetil Torgrim Homme wrote:

> Philip, I think perhaps the documentation for transport_filter should be
> clearer about whether transport_filter and pipe_command are run in
> parallel or sequentially.

Yes, I guess people don't have the background that I expect. I do say 
that a transport filter is like a "Unix filter", meaning that it's like 
a Unix command line like

  ls something | grep | whatever ...
  
where grep is a filter, but even then people probably don't know about 
the parallelism. A transport filter is run in parallel, of course. There 
is quite a long description of it in the manual, which does talk about 
the different processes, but it doesn't actually say "run in parallel".

-- 
Philip Hazel            University of Cambridge Computing Service,
[EMAIL PROTECTED]      Cambridge, England. Phone: +44 1223 334714.
Get the Exim 4 book:    http://www.uit.co.uk/exim-book

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