[Dovecot] imap-login process_limit reached

[Don Buchholz]

Michael Orlitzky wrote:
> On 01/17/12 13:15, Don Buchholz wrote:
>   
>>>   
>>>       
>> What makes me think 1024 is the default?
>> The documentation:
>> -->
>> http://wiki2.dovecot.org/Services?highlight=%28process_limit%29#imap.2C_pop3.2C_managesieve
>>
>>     
>
> That's only for those three services (imap, pop3, managesieve), not for
> imap-login unfortunately. Check here for more info,
>
>   http://wiki2.dovecot.org/LoginProcess
>
> but the good part is,
>
>    Since one login process can handle only one connection, the
>    service's process_limit setting limits the number of users that can
>    be logging in at the same time (defaults to
>    default_process_limit=100).
>   
Doh!  Thanks, Michael.  I wasn't looking at the original error message
closely enough.  I scanned too quickly and saw "service(imap)" and not
"service(imap-login)".  Now the failure when there are only ~200 (total)
dovecot processes makes sense (because about half of the processes here
are dovecot/imap-login).

I've added the following to our configuration:

    service imap-login {
      process_limit = 500
      process_min_avail = 2
    }

Thanks for your help ... and patience.

- Don