Fixing Plesk Postix sending emails locally

I had this issue too. Any email being sent to my company domain was being sent locally. This is (I believe) because in Plesk (yes it’s a Plesk issue).

So basically it’s going oh is the registered user lets send any emails locally or something like that.

Anyway, I have had to fix this twice now and I did it by editing the /etc/postfix/ file and commenting out the lines that started with “virtual”.