Getting error in Redmine when trying to receive notifications in my gmail inbox. Please help.

Hello /r/linuxadmin,

My organization requires me to setup redmine. I don't have any experience with redmine or ruby. I am using Ubuntu 12.04 and redmine 1.3.2 available in the repositories (I have to use this version as I'll be using this plugin). Both redmine and the plugin are working. Now,I am trying to receive notifications in my gmail inbox. For this purpose, I have created a configuration.yml file in /etc/redmine/default directory and these are the contents of this file:

 production: email_delivery: delivery_method: :smtp smtp_settings: tls: true enable_starttls_auto: true address: "smtp.gmail.com" port: 587 domain: "smtp.gmail.com" authentication: :plain user_name: "myemail@gmail.com" password: passwordnotinquotes 

I followed instructions given here http://www.redmine.org/boards/2/topics/26743

But, when I go to Administration -> Settings -> Email Notifications and click on send test email, I get this error:

 An error occurred while sending mail (Network is unreachable - connect(2)) 

I don't know if this is relevant or not but my organization also requires me to login to a proxy server in order to access Internet.

Any help is really appreciated.