Spam with postfix

[calport]

Not a tutorial, but see:

Need help about DKIM concept & setup

In order for email sent by your server to get past spam filters, of say Gmail, it is necessary to configure SPF, reverse DNS and DKIM correctly, so if you are enabling the latter on your Virtualmin box that would be the correct remedy. No. You are not required to manually add domains here that are already assigned to virtual servers and aliases that you have created in Virtualmin. Yes and no: when you enabled DKIM under Virtualmin --> Email settings --> DomainKey Identified Mails, Virtualmi…

And also:

DKIM Setup Questions

Correct. This is via Virtualmin >> Email Settings >> DomainKeys Identified Mail Correct. When virtual servers are created, Virtualmin takes care of its configuration if DKIM has already been enabled on the system. You do not need to manually add domains to the text area captioned ‘Additional domains to sign for’. Year is meaningless. I use the hostname, e.g. vps01, so the DNS record looks like vps01._domainkey.domain.com and in future if I migrate domain.com to vps02, this naming system off…