Very helpfull replies! Thanks a lot, I know all what I need.
Thanks Again
Frank
On Tue, Aug 11, 2015 at 11:02 AM, Viktor Dukhovni <exim-users@???>
wrote:
> On Tue, Aug 11, 2015 at 01:37:28PM +0100, Klaus Ethgen wrote:
>
> > P.S. What I really dislike with Postfix, but this is my own personal
> > view, is stuff in master.cf that makes it complicate to simplify the
> > config and the fact that queue IDs are not unique.
>
> Yes, Postfix does not offer built-in programmability (extensions
> are via policy services, SMTP proxy filters, milters and post-queue
> content filters), however unique queue ids have been avaibale for
> the past 3.5 years:
>
> http://www.postfix.org/postconf.5.html#enable_long_queue_ids
>
> It is true that service-instance-specific settings are specified
> via master.cf, but the way to keep that under control is to use
> indirection along the lines of:
>
> master.cf
> mysmtp unix ... smtp
> -o smtp_generic_maps=$mysmtp_generic_maps
>
> main.cf:
> mysmtp_generic_maps = <whatever>
>
> which avoids having to set the actual custom settings in master.cf,
> only the reference to the override setting goes in master.cf.
>
> And the most recent versions of Postfix can display and update
> these overrides via the postconf command.
>
> Yes, it would be simpler to have service-instance "namespaces" in
> main.cf, so that even the indirection "-o" settings might be made
> unnecessary, but I don't think lack of these is a compelling reason
> to choose one MTA over another.
>
> Exim has built-in customization, Postfix has a built-in queue-manager
> and typically better throughput and lower latency under load.
> Choose whichever works best for you, ideally based on substantive
> differences.
>
> --
> Viktor.
>
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