sticky bit & q-mail and DHCP

[Grant Cooper]

1.     I am using my home computer that uses a DHCP. In /etc/rc.conf my hostname is automatically entered. I realize this is the name of my computer given to me from my ISP. I purchased my domain kooper.ca. Should I change the hostname in /etc/rc.conf to hostname="dell.kooper.ca". If not, what would the origional host name be used for? I'm sure I should change it. I am attempting to install qmail again.   2.    chmod +t /var/qmail/supervise/qmail-pop3d What does it mean by sticky bit "+ t"