Hi Wietse, the unix socket can't be used by other users than root or postfix. Is there a way to configure ownership and/or permissions for the socket?
I thought under Linux the filesystem permissions reflect the permissions to the unix socket. Here is my config and the socket: master.cf: backdoor unix n - n - 3 smtpd # ls -l /var/spool/postfix/public/backdoor srw-rw-rw- 1 postfix postdrop 0 2011-07-19 14:15 /var/spool/postfix/public/backdoor # sudo -u dspam /usr/bin/socat - UNIX-CONNECT:/var/spool/postfix/public/backdoor 2011/07/19 16:53:44 socat[23143] E connect(3, AF=1 "/var/spool/postfix/public/backdoor", 36): Permission denied Am I doing something wrong? Thanks again Lars