I have a Ubuntu LAMP Server (6.10) installed at home; works great. Lot's of wordpress love happening.
However, WordPress isn't sending me any emails (notifications, users signing up, etc).
I am sure I have to enable something in Apache in order to allow WordPress to access something or other that is required for it to send email ... but I don't know what.
(For example, to get the image thumbnails to work I had to install a php5-gd package.)