On 16 May 2018, at 19.49, forums@mehl-family.fr wrote:

Hi,

In my maillog I see this warning message at every reception of e-mail:

status=sent (delivered via dovecot service (doveconf: Warning: /etc/dovecot/conf.d/90-quota.conf line 39: Global setting mail_plugins won't chan.....

It is just a warning, the e-mail was delivered.

I don't find where is the problem.

You have mail_plugins setting in 90-quota.conf that is ignored because you have defined mail_plugins in protocol lmtp {} before that in the config. The order matters.

Sami