PasswordRecovery control in asp.net

Question

I created my web application and user PasswordRecovery Control. My code in html :

<asp:PasswordRecovery ID="PasswordRecovery1" runat="server">
     <MailDefinition From="mail@gmail.com" Subject="ResetPassword"
      Priority="High"/>
</asp:PasswordRecovery>

And my web.config code is:

<system.net>
     <mailSettings>
        <smtp deliveryMethod="Network" from="mail@gmail.com">
           <network
              host="smtp.gmail.com"
              port="25"
              password="xxxxxxx"
              defaultCredentials="true"/>
        </smtp>
     </mailSettings>
</system.net>

But I get these errors and it doesn't work.

1-The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required.

2-A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 173.194.66.109:25

---

my web.config code is

<configuration>
    <system.web>
        <roleManager enabled="true" />
        <authentication mode="Forms" />
        <compilation debug="true" targetFramework="4.5" />
        <httpRuntime targetFramework="4.5" />
    </system.web>

    <!-- ... -->

    <system.net>
        <mailSettings>
            <smtp from="mail@gmail.com">
                <network host="smtp.gmail.com" password="mypassword"
                 enableSsl="true" port="578" userName="hsadeghi.t@gmail.com" />
            </smtp>
        </mailSettings>
    </system.net>
</configuration>

and form :

<%@ Page Title="" Language="C#" MasterPageFile="~/Masters/master-store.Master"
  AutoEventWireup="true" CodeBehind="UserPasswordRecovery.aspx.cs"
  Inherits="Store.Pages.userpasswordrecovery" %>

<!-- ... -->
<asp:Content ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
    <div class="wrapper">
        <div class="wrapper-rim">
            <div class="site-content">
                <div class="recovery-password" dir="rtl">
                    <asp:PasswordRecovery ID="PasswordRecovery1" runat="server"/>
                </div>
            </div>
        </div>
    </div>
</asp:Content>

Answer 1

Aside from enabling ssl in your configuration, you also need to set the correct port, which is not 25. It's 587.

<smtp deliveryMethod="Network" from="someaccount@gmail.com">
   <network
      host="smtp.gmail.com"
      port="587"  
      enableSsl="true"
      userName="someaccount@gmail.com"
      password="somepassword"
      defaultCredentials="false"/>
</smtp>

Answer 2

You need to specify that connection is secure:

<network enableSsl="true" ...

Answer 3

There is a very important error in an earlier answer.

The defaultCredentials attribute should be false not true, in order for it to work with Gmail.