[Dovecot] Enable mail logger plugin

[Steffen Kaiser]

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On Thu, 20 Feb 2014, Alexandre Ellert wrote:

> From: Alexandre Ellert <aellert at numeezy.com>
> 
>> @Alexandre: You've removed the "$mail_plugins" in the IMAP section as Peter already pointed out?
>
> I'm not sure to fully understand how mail_plugins directive works.

consider it as a variable like in the shell, PHP or perl....

> Please correct, if I'm wrong :
>
> Global mail_plugins lists common plugin used by all protocol :

global mail_plugins just assigns a variable, which is used as default, if 
the setting is missing.

>> mail_plugins = quota mail_log notify
> Later, within each protocol declaration, I need to reference $mail_plugins variable (i.e. mail_plugins = $mail_plugins …)

yes, if you want to include the previously defined value.

> Each protocol can use its own mail_plugins with an override :
>> protocol imap {
>>  mail_max_userip_connections = 80
>>  mail_plugins = quota imap_quota antispam
>> }
> In that case mail_log notify are not enabled for protocol imap.

Yep.

> So, I have two options :

> 1. List all mail_plugins explicitly for protocol imap, like this :
> 2. Use $mail_plugins variable to include global mail_plugins into protocol imap :

Yes, whichever suits your particular need more.

- -- 
Steffen Kaiser
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