On both the 1.1.0-beta2 installed on a fresh 12.04 Ubuntu installation AND 1.0.3 stable on a fresh 10.04 Ubuntu installation.
On the first one, I used dovecot as the mail server.
A user noticed that the lost password function wasn't working and I deduced that it was because PHP-mail wasn't isntalled. So I installed it. But it still did not work. Neither did mail sent roundcube.
So then we changed to the stable version so that we could integrate it with WHMCS.
In this one, we tried using courier as the email server.
Once again, i-MSCP is not sending any auto-mail: whether it is login details to new users, lost passwords, etc.
Also, mail does not send from squirrel mail at all.
What is going wrong? We have all the needed ports open, including SSL versions of each port.