Roundcube "login failed" - on Newly created email id's


I just now created a new email id for my addon domain. & tried to login into roundcube, after entering the complete email address & password, I’m getting this error every time “login failed”. I’ve updated the MX record for my addon domain too… I’m unable to understand what is the issue with roundcube new account!!. But when i tried to login with old email id, that was successful and i was in my inbox. please check the issue with the new account & help me.

Can you delete the e-mail account and try again? I just created a new account on my own account and I was able to login without any problems.