Issue with SMTP alert

Avast Free Antivirus / Premium Security
1

Hello, I try to setup AVAST in order to send smtp notification.
send email to my email address
server address: smtp.laposte.net
port: 25
Security: none
sender address: my email address
check smtp server requires authentification entering my login and password

I never receive any email. In the mail.log file I got:
Recv(RecvTimeout) error (S) 10054

I’ve tried with another smtp server I can also use: same results.

Is there anything wrong in my config? Should I modify my Windows firewall settings allowing AVAST to send emails?

2

I also want to specify that it used to work with that settings, but in the meantime I’ve upgraded AVAST to last 2015.10.2.2218. Could it be a bug in last AVAST versions?