Pay special attention to #10
If you have previously allowed any relaying, whether by IP address or any other method, wait until very late at night to make sure you don't disrupt your users and then disable it. In your /etc/mail/access file, for example, make sure that you only allow relaying from localhost which is 127.0.0.1.
Your listing of /etc/mail/access had a public IP address listed which permitted the entire world to use your system to relay - certainly an action which will generate a lot of angst towards you.
Craig
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I only had that IP in there temp because that address was not being entered into the drac database. Now that I got drac working again, I took it out.
I always work late, but anything after 6 is fine, mrtg says my mail traffic is almost 100% 7:30 am to 5:30pm, after that it's all spam