virtual vacation

Hi, I have configured virtual vacation like this: In master.cf: -- vacationunix - n n - - pipe flags=Rq user=vacation argv=/var/spool/postfix/vacation/vacation.pl -f ${sender} -- ${recipient} -- In main.cf: -- t

virtual vacation with mysql

Hi, I'm trying to configure virtual vacation on my server. In documentation I see which I do insert similary value in transport vacation:[autoreply.mydomain.com] What is the autoreply.mydomain.com? It's same of mx record? Thank you