good options for Multiple users on a common email account

[Joseph Tam]

On Wed, 23 Jun 2021, Pat G wrote:

> i ve a mail server to manage with some email accounts but with multiples users (+50) using a common email.
> it indicates sometimes that it can't connect cause too many connections.
>
> what are the good options to allow a lot of users for a specific account ?
>
> i modifyied these options :
> auth_worker_max_count = 60
> mail_max_userip_connections = 60
>
> is it sufficient ?

Probably not, but it depends on the mail client they are using.
Some mail clients chew up 3 or 5 concurrent connections per session.
MacOSX Mail.app will consume all the connections while doing global
pattern searching (i.e. if you allow 200, it will open up 200 connections
at a time before closing them).

If your users use POP3, then the limits have a good chance of working.

If too many concurrent connections becomes a problem, maybe you can
use mailbox sharing rather than single account access.

Joseph Tam <jtam.home at gmail.com>