Running CentOS 4.2 with all updates. I've been using sendmail for my MTA since forever. I've grown used to it and I can make it do what I want it to. However (there's always a catch, isn't there)...
Lately it seems that some mail is being lost. I've noticed some instances when a message was sent to myself and others which I will only see if someone replies back to everyone. Additionally, I am on the word-a-day list and have noticed that occasionally I don't get the word for that day. At first I thought it was just me. My .procmailrc is a horror to look at and I've got some fairly aggressive anti-spam stuff going on. But my mother has mentioned this problem, too. (I have my whole family setup with email on my server, good son that I am)
Anyway, I want to try swapping out sendmail for postfix to see if that makes any kind of difference. Now, I promise to hit the HOW-TO's and FAQ's and google/A9 myself blue in the face, but if someone has already done this could you kindly post a quick message with any "gotchas" you found or any config issues you ran into it would be greatly appreciated.
Thanks, Joe