Emailing through logstash not working

Hi Team,

I wrote this small logstash config. in which i just want to pick up some data and when the data comes it gets filter, and in the output section when the data comes it send an email.

    input{
 file {
   type => "dummylog"
   path => ["/root/sample.log"]
}
}
filter {
  grok {
    match => {
      "message" => '%{IPORHOST:remote_ip} - %{DATA:user_name} \[%{HTTPDATE:time}\] "%{WORD:request_action} %{DATA:request} HTTP/%{NUMBER:http_version}" %{NUMBER:response} %{NUMBER:bytes} "%{DATA:referrer}" "%{DATA:agent}"'
    }
  }
  date {
    match => [ "time", "dd/MMM/YYYY:HH:mm:ss Z" ]
    locale => en
  }
geoip {
    source => "remote_ip"
    target => "geoip"
  }
useragent {
    source => "agent"
    target => "user_agent"
  }
}
output{
email {
to => "*******@gmail.com"
address => "smtp.gmail.com"
port => "465"
via => "smtp"
username => ""
password => ""
from =>""
subject => "Email Testing from logstash"
body =>"This is Working now"
}
}

Here I'm confused in the output section, like i'f i'm giving from => xxxx@gmail.com, so where do i give that xxxx@gmail.com's credentials and also where do i give the mail server credentials, if there is any particular mail server.

really need help in this guys.

Thanks and Regards,
Sagar Mandal

The username and password options are used to authenticate with the server at address:port.

so in this cases the username and password are the email's right?

That is correct.