Rich Kulawiec via plug on 6 Sep 2019 11:51:47 -0700

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Re: [PLUG] Exim oops (vs Postfix?)

On Fri, Sep 06, 2019 at 12:45:50PM -0400, JP Vossen via plug wrote:
> What I'd like to know is why anyone would ever use anything other than
> Postfix?

1. There are use cases for postfix -- and for sendmail, exim, and courier.

2. Appropriately configuring an MTA in the contemporary environment requires
far more knowledge and experience than it did 20 years ago.  One of the
factors to consider is the likelihood of success based on the expertise
of the person doing the work.  In other words, even if MTA X was the
supposed "best" choice based on objective criteria, a person who has
vastly more experience with MTA Y might be better off (and *we* might
be better off) deploying MTA Y.

3. Exim is a good choice for people who are working their way up the
learning curve and lack significant MTA experience.  See previous point.

4. There are operations with significant expertise and significant
investments in MTAs other than postfix.  Some of those are quite solid
and there's simply no good reason to migrate them.  (Conversely, there
are operations which quite clearly lack expertise, and in such cases,
it really doesn't matter which MTA they're running: they're going to
pose problems for the rest of us.)

5. MTA monocultures are not a particularly good idea.  A pointed lesson
in that was taught on November 2, 1988.

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