Sending emails doesn't work

[blove57]

I'm having troubles sending emails. It always fails with this in the log files:
SMTP Error: SMTP error: No From address has been provided in D:\roundcube\program\steps\mail\sendmail.inc on line 334

I don't know why it's giving me this error? I have logged in using my email address, password and host. Below is my config:
$rcmail_config['smtp_server'] = 'mail.mydomain.com';
$rcmail_config['smtp_port'] = 25;
$rcmail_config['smtp_user'] = '%u';
$rcmail_config['smtp_pass'] = '%p';

To test if my SMTP settings are correct, in program/includes/rcube_smtp.inc I commented the code below just to see if my email would be sent:
// exit if no from address is given
// if (!isset($from))
// {
// smtp_reset();
// $response[] .= "No From address has been provided";
// return FALSE;
// }

After doing this my email was sent but from "Nobody <Nobody>". Why is my from info being lost?

[skaero]

If you go to settings then identities is there anything listed?

[blove57]

Ah you are correct, this was the problem. As simple as this is, it's really hard to expect users to fill out the identities section. I think a good way for this to work is the first time a user signs in, they are prompted with a page to fill out their settings and preferences, which would include the crutial piece of having identity information.

[skaero]

Yes well it auto makes it at the first loin but some time it dn't work right.