I am in the process of registering domains that are directly linked to email.
I will be starting a free email service much like Gmail, I would like to know what would be the best software to use to make this work just as well. So far I have looked at Open-Exchange and it seem to be the best I have found. Although if I was to use it I would need the hosting edition which is a little expensive for a new service.
I would like help from you guys to suggest the best software for me to use.
I could obviously use normal mail software on a Ubuntu Server with a web UI which would allow users to make an email account and check through roundcube etc.. This is fine but I want something more designed for this function.