Round cube giving error :
[wpfmb type=’error’ theme=2]“501: failed to set sender” while trying to send mails.[/wpfmb]
Solution is few steps away:
Open Roundcube >> Settings >> Identity >> New identity.
Add the new identity and save the settings. Now the error should be gone.
If you have Roundcube Database error you can check our article cPanel roundcube DATABASE ERROR: CONNECTION FAILED.