[X-Unix] Postfix howto

[Kuestner, Bjoern]

>> Mail comes in --> processing magic -->  Processed mail goes out.
> 
> What do you want to happen w/ the magic?

The "magic" should cut off the last ten lines using the script which Kino
recently provided (or a variant of it depending on the exact setup). Now
Victor Eijkhout and Xavier Noria have provided additional solutions in awk
and perl respectively. (Thanks!)

Background (and now I hope this doesn't sound all too silly): 
- My outgoing mails are automatically appended by the mail server with a
long sig. 
- On the OS X list however a signature must be no longer than four lines.
- The signature is beyond my control.
- One of the OS X list dads, who appreciates my posts there, has his own
little postfix server running 24/7. But he's not a pro admin either. 
- He offered to supply the resources for the following scenario that 
  1) I would send my mails to his server, 
  2) they would be trimmed of the signature and then 
  3) forwarded to the list ... 
if I figure out how can this be done! 

Which is beyond anything in the server world I have done so far. 

But since this is a nice project with a clear target I hope to get this
running by doing my share of reading on the web and the help of this list.

My current understanding (and I haven't yet worked up on mailproc and
maildrop as suggested by Michael Schiller and Stroller respectively) is that
something like the following needs to be part of /etc/master.cf

smtp inet n - n - - smtpd -o content_filter=cutlast10.sh: 

filter unix - n n - - pipe 
flags=Rq user=filter argv=/home/filter/cutlast10.sh -f
$bjoern.kuestner at drkw.com -- $osx at osxlist.com  

Where cutlast10.sh is the script that does the job and should take input
from standardout?

I got this far after learning that "Content filtering" is probably the
feature in Postfix which does the job:
The feature to use in Postfix seems "Content filtering":
http://www.irbs.net/internet/postfix/0206/0483.html
http://www.irbs.net/internet/postfix/0206/0490.html

and then trying to make sense of this example
http://archives.neohapsis.com/archives/postfix/2001-10/1762.html
http://archives.neohapsis.com/archives/postfix/2002-05/0272.html

Uh, ah, I really feel like drifting out in space ... boldly going where no
Bjorn has gone before.

Any help is appreciated. I try my best to live up to my part and to the
reading.

Thanks for everybody's help.

Bjorn


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