G'day perl_dan,

Welcome to the Monastery.

I'm not familiar with your O/S, so this is just a guess as to the problem.

I suspect the issue involves a lack of transport (where hostname, port, etc. are specified).

Take a look at Email::Sender::Manual::QuickStart, then follow the link to Picking a Transport which has further details.

Next, take a look at Email::Sender::Transport for general information; then at Email::Sender::Transport::SMTP [I'm assuming you want SMTP]. The latter shows the available attributes. I strongly recommend you set debug to TRUE.