On Wed, 2010-12-15 at 17:07 +0100, Thomas Hummel wrote: > On Wed, Dec 08, 2010 at 08:42:42PM +0000, Timo Sirainen wrote: > > > You reached the default limits of imap-login processes. You probably want to > > switch to high performance mode for them: > > http://wiki2.dovecot.org/LoginProcess > > By the way, > > what does count for one "client" in the "client_limit" setting ? For instance, > if a client (User Agent like Thunderbird) is configured to open 5 connections, > does that increase the client count by 5 for this limit ?
Depends.. One client is one unix/tcp connection for that specific service process. Then it depends on the service's settings: If service imap-login has been configured with service_count=0, it also triggers client_limit=$default_client_limit. Then you can have that many simultaneous connections to that process. But imap-login processes stop handling connections after user has logged in, except if the connection was using SSL/TLS. imap processes then typically have client_limit=1 and instead the process count increases. So with Thunderbird that creates 5 SSL connections you'll get: - 5 less clients available for imap-login service - 5 less processes available for imap service
