IMAP login problem

[bosco]

Hi,

I'm using Roundcube but i've a problem. I can't send messages. In my logs, i can see

[18-Jun-2007 10:03:08 +0200] IMAP Error: Authentication for [email protected] failed (LOGIN): "a001 NO Login failed." in on line 0

I'm using QMail/Vpopmail and courier. QMail is in pop before smtp. It's maybe the problem.

Can someone help me ?

Thanks.