I use exim4 for all my guest systems and thus just copy over a config file to make it work.
The server however, always tells me to do
sudo dpkg --add-architecture i386; sudo apt-get install postfix.
Mail sending works fine though, and everything else as well.
I know those are just "warning" and "info" messages so nothing is going to break, but
you might want to consider adding an alternative check for postfix/exim4 unless you really need it somewhere.
I use exim4 for all my guest systems and thus just copy over a config file to make it work.
The server however, always tells me to do
sudo dpkg --add-architecture i386; sudo apt-get install postfix.Mail sending works fine though, and everything else as well.
I know those are just "warning" and "info" messages so nothing is going to break, but
you might want to consider adding an alternative check for postfix/exim4 unless you really need it somewhere.