From: Chris M. Miller
Date: 2006-06-05 13:39:24 -0400
Subject: Re: Question regarding the merits of milter flag to
More information..: http://www.milter.info/#Support
> I am considering configuring Sendmail to Temp Fail for many (if not all)
> of my milters if the milter in question is not available. However
> before I do such I was wondering what other people's opinions on this
While I share your enthusiasm for filtering, I'll warn you that you
should be careful with this option. I don't know your users, so I can only
speak from my experience, but here's what I've learned:
Most mail filters will annoy one or more of your users for assorted
reasons; I had no end of people complaining that milter-sender was keeping
them from receiving email from their busted-mailer friends. Fortunately,
the Snert milters have undergone a lot of work to make them very good at
what they do, and also very flexible for exceptions; but you're still
going to have people who don't like them.
So.. the worst case scenario is to imagine the inevitable time somewhere
in the future when you go away (vacation, cruise, hospital visit, etc) for
a few unreachable hours, days, or weeks, and one of those filters decides
to keel over dead and needs manual attention to restart. If the whole time
the filter is down, your users are completely unable to receive their
mail, you'll make your list of unsatisfied customers quite a bit longer.
In my case, it was decided after a few incidents of just the above type
that no single filter was that important. Some sites may consider virus
scanning to be that important - we do, but we solve it instead by having
multiple independent virus filters.
YMMV, but I'd suggest asking your users' opinions (depending, obviously,
on the nature of your admin/customer relationship to them).
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