On Fri, 2008-05-16 at 11:38 -0400, Bryan Polk wrote:
First, thanks for this great product. We migrated from Courier last week with only small bumps along the way. We have a few hundred active users with a mix of pop3 and imap clients. The server is running on sparc Solaris 9.
We're seeing a problem now with the number of "imap-login" processes rising slowly to it's limit and then (understandably) not letting any more logins happen. Legitimate users seem to have no problem logging in until the limit is hit. Another odd thing is that this is not a problem for pop3-login processes, just imap...
How many imap processes do you have at that time? Each SSL connection uses up one imap-login process.
One sure way to fix this would be to change to high-performance mode as described by http://wiki.dovecot.org/LoginProcess