I've spent some time trying to reproduce this problem but all my attempts have been unsuccessful so far.
Using a hardy dovecot server, I've tried to reproduce the unable to connect problem. I ran tests with ~ 200 clients connecting concurrently. I hit the default login_max_processes_count limit (set to 128). Once raised to 256, all clients were able to successfully login. I've attached the scripts used to do the test.
I've spent some time trying to reproduce this problem but all my attempts have been unsuccessful so far.
Using a hardy dovecot server, I've tried to reproduce the unable to connect problem. I ran tests with ~ 200 clients connecting concurrently. I hit the default login_max_ processes_ count limit (set to 128). Once raised to 256, all clients were able to successfully login. I've attached the scripts used to do the test.