I've got a Postfix/Courier mail server (Authenticated with SASL/MySQL) all according to this tutorial. I'm currently running my server on Debian 6, it is a VPS. It works well as far as I can see but I can't seem to require authentication for inbound email sending.
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I have installed Postfix, Dovecot and MySQL on CentOS 5 using the following instruction:
I'm doing this first time and my goal is two support mails for different hosts on the same server.
The only difference that I've installed version 2.2.10 of Dovecot.
So I went through instructions, everything looks fin