Problem configuring Email Server - Dovecot

I have used this tutorial

https://www.linode.com/docs/email/postf … -and-mysql">https://www.linode.com/docs/email/postfix/email-with-postfix-dovecot-and-mysql

I make it all.. but i cant login to my account..

I think there is a problem on this file of the configuration

https://www.linode.com/docs/assets/1240 … r.conf.txt">https://www.linode.com/docs/assets/1240-dovecot_10-master.conf.txt

If i change port = 0 to port = 143 it works…

but when y put port = 0 not.

why the ssl ports are commented ?

I uncommented that but still not working. I cannot connect to ports 995 or 993.

What must I do ?!

How can i start testing?

thanks !