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From: Wietse Venema (wietse_at_porcupine.org)
Date: Sat Jan 11 2003 - 22:00:19 CST

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    Rahul Dhesi:
    > On Sat, Jan 11, 2003 at 06:32:25PM -0500, Wietse Venema wrote:
    >
    > > > I was using the rule of thumb that if 'man xxx" for some postfix daemon
    > > > xxx mentions a configuration variable, than xxx can be invoked in
    > > > master.cf and given that variable with -o.
    > >
    > > At the risk of repeating myself.
    > >
    > > The relay_domains parameter affects many Postfix processes (like,
    > > many different Postfix daemon programs).
    > >
    > > Giving it (i.e. the relay_domains parameter) different values to
    > > different processes (i.e. different relay_domains values to different
    > > types of Postfix daemon programs, for example, by specifying
    > > different values on the respective dameon command lines in the
    > > master.cf file) creates inconsistencies.
    > >
    > > Defining relay_domains in main.cf (the common location from which
    > > all Postfix daemon processes retrieve configuration settings) is
    > > better than specifying it only (in master.cf) on the smtpd command
    > > line.
    >
    > This is fair enough, but it leaves me with one worry. Suddenly I can no
    > longer be sure which options are safe to set differently for different
    > instances of the same daemon.

    -o is is relatively safe only for parameters that affect only one
    type of program.

            Wietse