I go to existing machine loaded a few months back fresh, using Virtualmin installer, where, SPAM filtering was turned off via features and plugins. Now, it turns out I am adding a domain for which I need it, so, going to turn it on.
Well, I can't. It says: "Failed to save enabled features : The Procmail program needed for spam filtering does not appear to be installed on your system, or has not yet been set up properly in Webmin's Procmail Mail Filter module. If your system does not use spam filtering, it should be disabled in Virtualmin's module configuration page."
It does show up just fine in the webmin module. There is a procmail installed of course. I copied over from another machine the /etc/procmailrc file. So, not sure what else I can do really.
Of course, in the webmin procmail page it does show "Warning - any rules defined below will not be used : Procmail is not enabled in your Postfix configuration. The configuration file /etc/postfix/main.cf must have the mailbox_command option set to /bin/procmail." And of course that is true, trying to enable it!