I have installed Virtualmin GPL on CentOS 5.1 using the install script. Everything is running good except mail. I can receive email, but it won't send email. When I look in the queue the reason given was connection timed out or blocked by isp. I tried changing it to relay by my isp and that didn't work either. I am using the free account at dyndns.com as my dynamic domain and dns. I can manage my way around linux a little, and this is my first time using virtualmin. Can anyone give me some help?