Re: How to log output from whatever pipe runs ?

[Wietse Venema]

chaouche yacine:
> vmail@messagerie:/var/vmail$ cat /tmp/maildrop 
> Wed Apr 6 14:26:45 CET 2016
> running maildrop as vmail with arguments -V9 -d a.chaou...@algerian-radio.dz
> je suis toujours l?
> ERR: authdaemon: s_connect() failed: Permission denied
> Invalid user specified.
> suis-je toujours l? ?
> vmail@messagerie:/var/vmail$ 

Well that is your problem.

Try disabling SeLinux/AppArmor/etc. security.

        Wietse