I had enabled WordPress’ feature “E-Mail me when there’s a comment”. I couldn’t figure out why it wasn’t working. Then, I realized the problem. “Duh! I never installed a mailserver on my LInode!” I disabled that feature. I don’t need it anyway.
I’m planning to set up gmail ad-supported on my domain. Then, I’ll have an @realfreemarket.org E-Mail address.
I’m just keeping the minimum stuff I need running. For example, if I do need to FTP something, I start the FTP server, do my FTPing, and then close the server. That minimizes security risks.