Topic: system upgrade (debian)
i have a install iredmail on debian 6.0... today have make a apt-update && apt-upgrade and found 3 update for postfix....
"postfix postfix-mysql postfix-pcre"
can i make upgrade without any problem or risk to block a system??
is need to backup postfix folder (/etc/postfix) or another file before upgrade??
sorry but this first time i upgrade postfix and i wan't block the system!!