Maybe I'm doing something wrong, but I setup a test email server that I wanted to move to... (Kolab 3) and it worked very well and eventually moved into production. I setup a new ISPConfig3 server to host everything but the e-mail, but ever since I did that, nobody in inside or any server inside the building connected through the ISPConfig3 server can e-mail anyone. I have 2 domains running through that server and neither of them can e-mail each other since I setup ISPConfig3. But I have disabled the mail functionality by going to Systems... Clicking on my server name... and removing the checkbox from mailserver. Did I miss something, or am I stuck like this. I need to have the ability to e-mail internally.