Since my websites are growing so quickly I have to move to a new hoster. I've been a network administrator 8 years ago but I'm extremely rusty.
At first I build a Linux server without control panel and everything worked perfect. Since it was a bit to much setting up every vhost by hand I setup CWP. This was even more work since most services are outdated. So I bought a cPanel license.
Everything works perfect except e-mail.
I can receive e-mail, but if I send an e-mail it doesn't deliver. If I look at the logs it clearly says delivered. For example to Hotmail:
Delivery Host: mx2.hotmail.com
Delivery IP: 184.108.40.206
Size: 576 bytes
I think I made a mistake in the DNS records but I can't put my finger on it. I worked over 90 hours almost non-stop so I'm fuzzy. My domains are hosted somewhere else and all the IP-addresses are pointing to the new server.