Hi Guys,

Previously got caught with IMAP connection limits of 4 connections per
ip, one customer with outlook and two imap accounts, which
parallellized its connections quickly maxed out and the server became
unreachable, upped the per ip limit to 10, and max to 100, and all
seems fine.

Today, esmtp hit the limit of 40 connections, seeing this in the logs:
Aug 31 14:06:42 webmail courieresmtpd: 40 maximum active connections.

This is the first time this limit has been hit in the 20 days the new
server has been live, it is running the courier-0.56.0.20070804
release.

Are there any rules of thumb which should be used to set connection
limits, either based on hardware specs or users on the system?

Lisa.

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