The load on our machines has gotten too high, so I started to see log messages that directed me to look at this page for config changes:
https://pad.riseup.net/redirect#http%3A//wiki2.dovecot.org/SocketUnavailable
One of the things I wanted to do on that page was to set the:
service imap { service_count = 100 }
but when I added that to the service imap block, and restarted dovecot, I see this in the logs: Error: net_connect_unix(/run/dovecot/imap-postlogin) failed: Permission denied
I dont understand how this impacts permissions. Its clearly this setting, because when I remove it, things work again. I found nothing else in the logs indicating a configuration problem.
This is what the config block looked like:
service imap { # Most of the memory goes to mmap()ing files. You may need to increase this # limit if you have huge mailboxes. #vsz_limit = 256M # Max. number of IMAP processes (connections) process_limit = 4096 service_count = 100 executable = imap imap-postlogin }
service imap-postlogin { # the script process runs as the user specified here (v2.0.14+): #user = $default_internal_user
executable = script-login /usr/local/sbin/postlogin_imap
# this UNIX socket listener must use the same name as given to imap executable unix_listener imap-postlogin { } }
This is with dovecot 2.2.13, thanks for any help you can provide!
micah