Changing Site Email

Hi, I tried changing the site information email address from [email protected] to [email protected](mydomain).com and now when I complete checkout I get a message: Unable to send e-mail. Contact the site administrator if the problem persists. The drupal log says: Error sending e-mail (from [email protected](mydomain).com to [email protected]). This seems odd as it advises you to use an email address ending in your domain name. Why would [email protected] work and not my own? Do I need to install a separate mail module?


To change the site email you just go to Configuration => System => Basic Site Settings

Hope it helps.