ad 1. It is (already was) set to "Yes"
ad 2. I dont understand ... usually the external SMTP-Port is 25 (if you want to receive email . Where else should they come in? ->
I am out of ideas but as you did already a lot of changes under the hood, maybe there is something broken with your modifications.
And of course, you need receive emails.
- Make sure that you have enable the "Configuration/Options: Use advanced statistic filter"
- And check if your incoming emails arrive on the external SMTP port
Just to know (if anybody has too much time): what is the difference of "advanced" and "normal" statistics. We use different machines for inbound/outbound everytime because of different rules / limitations / checks. So I will never see the "advanced" statistics. What do they show more?