Maillog warning

[Christian Kivalo]

On 2018-05-16 21:07, forums at mehl-family.fr wrote:
> OK.
> 
> I renamed "conf.d/90-quota.conf" to "conf.d/13-quota.conf" and I have
> no more this message.
This doesn't really fix your problem, you just removed the signs of it. 
The order of the files in /etc/dovecot/conf.d matters.

Please provide the following:
doveconf -n

grep -B2 -A1 'mail_plugins =' /etc/dovecot/conf.d/*` shows the 
unexpanded mail_plugins settings from your config.

-- 
  Christian Kivalo