On Fri, 2006-10-27 at 13:18 -0400, Mike - EMAIL IGNORED wrote: > On FC4, for my own edification, and hopefully not > doom, I have set iptables to pass only packets > that I understand, and to log rejections. I find > port 25 in use, despite that I am not using mail. > What is the purpose of this? Sendmail is usually running on FC4, and it may be listening to the port, usually just on the local loopback interface. It's used for things like the cron and logwatch reports being sent to the root user. -- (Currently testing FC5, but still running FC4, if that's important.) Don't send private replies to my address, the mailbox is ignored. I read messages from the public lists.