I think here will be the best place to put my little question about using AVAST! and Thunderbird.
First of all, i use K9 to keep my mail box free of spam. So , i need to change some of my configuration in TB to him understand what´s going on ... .

But (we always have a but

) i think AVAST! does not like TB because it can´t control my accounts. I read Technical´s avast4.ini support but it didn´t work.
What i´m supposed to do?

I tried this:
[MailScanner]
DefaultPopServer=pop.mail.yahoo.com.br (i tried it)
DefaultSmtpServer=smtp.mail.yahoo.com.br ( i tried it)
ShowTrayIcon=1
UseDefaultSmtp=0
AutoSetProtection=1
PopListen=127.0.0.1:9999 ( i tried this one)
SmtpListen=127.0.0.1:9999 ( i tried too )
The port 9999 is from my K9 and i need to configure my incoming server like it:
Server name = 127.0.0.1
User name = pop.mail.yahoo.com.br/110/myname
Port: 9999
And my outgoing :
Server name = smtp.mail.yahoo.com.br
User name = myname
Thanks !!!!