Maintain Vacation replies
From CSEE Documentation
Vacation allows for an autoreply email to be sent to every sender of every email received. The sender only gets one vacation autoreply message, even if multiple messages are sent.
Vacation needs to be manually activated and deactivated.
Enable Vacation
Log in to a CSEE UNIX system.
Edit ~/.vacation.msg and write your autoreply message.
Initialize your vacation database with
vacation -i
Edit ~/.forward with the following, replacing username with your username
\username, "|/usr/bin/vacation username"