Dear Lazyweb,
I recently noticed that some people e.g. don’t know the “mailq” command, which is fairly standard for email servers to print the current mail queue. Which is an essential command if you want to debug your mailserver.

So I was looking for a good tutorial to recommend on “running” an email server, and had a hard time finding one… there is a large list of online books, but as far as I can tell, they don’t even teach such basic things such as mailq, do they (I of course only checked those I could read online).

Nor could I find this information easily accessible on the Postfix homepage. But there are a couple of things you should know at least where to find. Including showing whats stuck in your mail queue, why, and how to remove these messages.

I guess this applies to many many things. Everbody assumes the basics to be clear, and just talks about how to pick certain configuration options…