On Thu, Nov 29, 2001 at 11:42:14AM -0800, Kurt Lieber wrote:
> On Thursday 29 November 2001 11:22 am, Dave Sherohman wrote:
> > That's something I've wondered about for a while...  I've found
> > exim's .forward filtering to be more than adequate for anything I've
> > ever wanted to do (and a lot more human-readable to boot), but you
> > seem to be implying that it's less capable than procmail.  What can
> > procmail do that exim can't?
> 
> I meant "cruel" in the sense that exim's filtering syntax is Shakespeare 
> compared to procmail's butchery.
> 
> I'm not sure I understand all the differences between exim and procmail 
> filtering, but here's my limited understanding:
> 
> * exim allows you to filter without changing the envelope sender -- not sure 
> if procmail can do this.
> * exim filtering is better at detecting (and preventing) duplicate messages 
> among multiple users
> * procmail can pipe messages to other programs and use the return code to do 
> futher filtering.  Exim can pipe to external programs as well, but can't 
> (AFAIK) use the return code in any way.
> 
> Basically, exim is set up to deliver messages, so its filtering is designed 
> with message delivery as the ultimate goal.  Procmail is more of a swiss army 
> knife and has a bit more flexibility.  The two are certainly not mutually 
> exclusive -- one can augment the other.
> 
Hope you don't mind the interruption. You may have noticed my slew of
postings about difficulties with sorting mail. I read your reponse to mean
that I may not even require the services of procmail, as I ~am~ using exim
as my MTA. Is this correct? I just want fairly simple pre-sorting of mail
before I read it with mutt.

> BTW, I highly recommend the O'Reilly exim book if you're at all interested in 
> learning more about exim.  I use it most/all of the time when I have exim 
> questions.
> 
No doubt a very helpful book. Unfortunately this "capital" city on the east
caost of Canada has just discovered that M$ is ~not~ the only OS. I'd have
to order said book, and wait 4 - 6 weeks for delivery of it. Not sure I can
go through another few weeks of this dilemma.

> hth
> 
> --kurt

It certainly gave me a new direction to look into.

Thanks muchly for the input.

C. Masters

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