Help needed with mail server setup

[Chris Lemire]

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             I am trying to setup the following,
 and I have made some progress. Here's my setup.

   Fetchmail (downloads from my gmail account)
   Mutt (I need to recompile it to use an
 encryption plugin and compression for email)
   Evolution (Reads mail that Fetchmail
 downloads, and needs to be able to use Postfix for sending
 emais)
   Procmail (Sorts my email with regular
 expressions and prints certain emails, I also need to set
 it up in conjunction with Spam Assassin)
   Fetchyahoo (downloads emails from my yahoo
 account because pop3 access is not free for those
 who sign up with and choose usa as their country)
   Mailman (I'm still trying to figure out what I
 am going to use this for, but I think it would
 be very cool and useful to learn.)
   Postfix (smtp server for relaying mail to a
 smarthost.)

 Here are my questions.

   How can I know if I need SASL when setting up
 Postfix?
   How can I know if I need SMTP Authentication?
   Do I need it because gmail uses it even though
 I will be relaying mails to my internet
   Should I configure Postfix to use mbox or
 Maildir format?
   Why should I configure it to use one or the
 other?
   Does Fetchmail use mbox or Maildir?
   Which one does it use by default?
   Should I configure Postfix to use the same as
 Fetchmail?

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Christopher Lemire
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