Dovecot mail-filter execution error.

[Jerry]

On Thu, 31 Mar 2016 13:28:50 +0530, use experience stated:

>Hello,
>
>
>While using mail-filter plugin, I am getting following error. Please
>help me.
>
>
>Mar 31 07:48:31 ip-172-31-29-173 dovecot: lda: Error: userdb lookup:
>connect(/var/run/dovecot/auth-userdb) failed: Connection refused
>
>Mar 31 07:48:31 ip-172-31-29-173 dovecot: lda: Fatal: Internal error
>occurred. Refer to server log for more information.

Including the output of "dovecot -n" would aid us in diagnosing your
problem.

-- 
Jerry