Pb with email configuration with dovecot

Hello everybody
I’m trying to resolve my email issue for many days. I searched many forums and can’t find any solution
My configuration is: webmin/virtualmin v 1.730, with postfix v 2.7.1 and Dovecot v 1.2.15
My problem is with Dovecot (I think)
I created a user/email account and try to configure on thunderbird
I can receive email, but I can not send (I precise that I can send from webmin admin )
My error on thunderbird :
* OK [CAPABILITY IMAP4rev1 LITERAL+ SASL-IR LOGIN-REFERRALS ID ENABLE STARTTLS AUTH=PLAIN] Dovecot ready
I am not very familiar with dovecot, I just want to have email account and ability to send
If anybody can tell me how resolve dovecat’s problem or another way to have email account please tell me
Thanks

Hi,

I’d be happy to assist you over a screen sharing session identify and resolve your email issues. Please drop me a line on Skype if you would like my assistance.

Best Regards, Peter Knowles TPN Solutions

Email: pknowles@tpnsolutions.com
Phone: 604-782-9342
Skype: tpnsupport
Website: http://www.tpnsolutions.com