On 3/1/19 9:53 AM, Ben Archuleta wrote: > Hello All, > > > I need to set up a new mail server to replace an aging CentOS 6.3 mail server. I was wondering what were some of the best guides on the web for Postfix (Maildir), Spamassassin, ClamAV, Dovecot? > Probably not what you are looking for and it still has bugs, but I just (within last five days) started this project for securing outbound SMTP from a Postfix server, taking DANE, MTA-STS, and STARTTLS Everywhere policies into consideration. One thing I will note, don't use the Postfix that ships with CentOS 7.x. It was fine when 7.0 shipped, but you really want to be using 3.2 or newer now.