Re: [gentoo-user] anyone using postfix 3.0.0

[Wolfgang Mueller]

On Wed, Mar 25, 2015 at 22:34:10 -0400, gottlieb@×××.edu wrote:
> Then I run for a while, check the logs and issue the appropriate
> postconf commands.

Yes, exactly.

You can also manually go through the settings mentioned in the
"Overview" section of COMPATIBILITY_README, to see if anything needs
changing in main.cf/master.cf. That's what I did.

> Not so clear is when do you turn off backwards compatibility (i.e. set
> the level).  Does postfix determine the level right away or should I let
> it run for a few weeks so it sees a lot of mail?

The documentation is not clear on this, but I don't think there's any
kind of logic behind the compatibility level postfix mentions in its
log - it's just the hard-coded version specifier, the "most recent"
compatibility level.

You can turn off the safety net once you made sure that postfix is
configured the way you want; that is, once you made sure that no more
backwards-compatible default settings would need to be made permanent.

For example, relay_domains used to default to $mydestination. With
postfix 3.0.0, it defaults to:
relay_domains = ${{$compatibility_level} < {2} ? {$mydestination} : {}}

If you rely on the default setting of relay_domains (i.e. you don't set
it explicitly in main.cf) you may need to change it now.

-- 
Wolfgang Mueller / vehk.de / 0xc543cfce9465f573
 
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