good options for Multiple users on a common email account

[John Stoffel]

>>>>> "Pat" == Pat G <patgsiosisr at gmail.com> writes:


Pat> i ve a mail server to manage with some email accounts but with
Pat> multiples users (+50) using a common email.  it indicates
Pat> sometimes that it can't connect cause too many connections.

Can you post some log messages from around when this happens?  It
should be easy enough to generate loadby running abunch of fetchmail
processes or other imap CLI tools against those shared accounts. 

Pat> what are the good options to allow a lot of users for a specific
Pat> account ?

I'm honestly not sure, but it shouldn't care whether it's one account
logged in multiple time, or a whole bunch of accounts all accessing
their own mailboxes.  

Pat> i modifyied these options :
Pat> auth_worker_max_count = 60
Pat> mail_max_userip_connections = 60

Pat> is it sufficient ?

Pat> dovecot -n :

Pat> auth_worker_max_count = 60
Pat> mail_location = maildir:/home/%u/Maildir
Pat> namespace inbox {
Pat>   inbox = yes
Pat>   location = 
Pat>   mailbox Drafts {
Pat>     special_use = \Drafts
Pat>   }
Pat>   mailbox Junk {
Pat>     special_use = \Junk
Pat>   }
Pat>   mailbox Sent {
Pat>     special_use = \Sent
Pat>   }
Pat>   mailbox "Sent Messages" {
Pat>     special_use = \Sent
Pat>   }
Pat>   mailbox Trash {
Pat>     special_use = \Trash
Pat>   }
Pat>   prefix = 
Pat> }
Pat> passdb {
Pat>   driver = pam
Pat> }
Pat> protocols = " imap"
Pat> service imap-login {
Pat>   inet_listener imaps {
Pat>     port = 993
Pat>     ssl = yes
Pat>   }
Pat> }
Pat> ssl_cert = </etc/ssl/certs/dovecot.pem
Pat> ssl_key =  # hidden, use -P to show it
Pat> userdb {
Pat>   driver = passwd
Pat> }
Pat> protocol imap {
Pat>   mail_max_userip_connections = 60
Pat> }

I would just bump those two numbers up and load test with an IMAP
client you can script out.  Shouldn't be too hard to do.

John