[Maia-users] lost connection after CONNECT (solved?)

[Robert LeBlanc]

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Greg Woods wrote:

> ... we haven't seen any negative resource
> impact from using a high number of listener processes. But if your
> hardware isn't as beefy as ours, I suppose that could be an issue.

That's the key point--while Postfix listeners are relatively small, they
each consume some resources (if only for their own local variable and
data stacks), and at some hardware-dependent point you'll eventually
start to notice that impact.  You may be able to run 200 listeners on
your "beefy" hardware, but that's not advisable for a guy running
everything on a single PII-300 in his basement :)


> Add this up, and about 3/4 of the mail we get is rejected.

A sad comment on the state of spam, certainly.  But you're doing the
right thing by doing as much blocking upstream from Maia as you can
reasonably afford to do without incurring false positives.  Getting rid
of the most "obvious" stuff before Maia ever gets a look at it is just
good resource management.

This also makes a good case for running additional Postfix listeners,
though, since the listeners that are handling all of these rejections
can't otherwise be feeding mail to amavisd-maia listeners behind them.
200 still sounds very high to me, but since you have the hardware... :)

- --
Robert LeBlanc <rjl at renaissoft.com>
Renaissoft, Inc.
Maia Mailguard <http://www.maiamailguard.com/>

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