Urgent help with mailing webform

First off, I'm super happy with the hosting DASP has provided. Our previous host crashed and was not supported at all. The site transferred over and was 90% functional from the start. However, the page emailing the service request form is not operational. Could someone please help me with this. Thank you. Note: This site was dumped in my lap and I have NO knowledge on ASP coding at all.

web.config

Code:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    
  <system.web>

    <!--  DYNAMIC DEBUG COMPILATION
          Set compilation debug="true" to insert debugging symbols (.pdb information)
          into the compiled page. Because this creates a larger file that executes
          more slowly, you should set this value to true only when debugging and to
          false at all other times. For more information, refer to the documentation about
          debugging ASP.NET files.
    -->
    <compilation defaultLanguage="vb" debug="true" />

    <!--  CUSTOM ERROR MESSAGES
          Set customErrors mode="On" or "RemoteOnly" to enable custom error messages, "Off" to disable. 
          Add <error> tags for each of the errors you want to handle.

          "On" Always display custom (friendly) messages.
          "Off" Always display detailed ASP.NET error information.
          "RemoteOnly" Display custom (friendly) messages only to users not running 
           on the local Web server. This setting is recommended for security purposes, so 
           that you do not display application detail information to remote clients.
    -->
    <customErrors mode="Off" />

    <!--  AUTHENTICATION 
          This section sets the authentication policies of the application. Possible modes are "Windows", 
          "Forms", "Passport" and "None"

          "None" No authentication is performed. 
          "Windows" IIS performs authentication (Basic, Digest, or Integrated Windows) according to 
           its settings for the application. Anonymous access must be disabled in IIS. 
          "Forms" You provide a custom form (Web page) for users to enter their credentials, and then 
           you authenticate them in your application. A user credential token is stored in a cookie.
          "Passport" Authentication is performed via a centralized authentication service provided
           by Microsoft that offers a single logon and core profile services for member sites.
    -->
    <authentication mode="Windows" /> 


    <!--  AUTHORIZATION 
          This section sets the authorization policies of the application. You can allow or deny access
          to application resources by user or role. Wildcards: "*" mean everyone, "?" means anonymous 
          (unauthenticated) users.
    -->
    <authorization>
        <allow users="*" /> <!-- Allow all users -->

            <!--  <allow     users="[comma separated list of users]"
                             roles="[comma separated list of roles]"/>
                  <deny      users="[comma separated list of users]"
                             roles="[comma separated list of roles]"/>
            -->
    </authorization>

    <!--  APPLICATION-LEVEL TRACE LOGGING
          Application-level tracing enables trace log output for every page within an application. 
          Set trace enabled="true" to enable application trace logging.  If pageOutput="true", the
          trace information will be displayed at the bottom of each page.  Otherwise, you can view the 
          application trace log by browsing the "trace.axd" page from your web application
          root. 
    -->
    <trace enabled="false" requestLimit="10" pageOutput="false" traceMode="SortByTime" localOnly="true" />


    <!--  SESSION STATE SETTINGS
          By default ASP.NET uses cookies to identify which requests belong to a particular session. 
          If cookies are not available, a session can be tracked by adding a session identifier to the URL. 
          To disable cookies, set sessionState cookieless="true".
    -->
    <sessionState 
            mode="InProc"
            stateConnectionString="tcpip=127.0.0.1:42424"
            sqlConnectionString="data source=127.0.0.1;Trusted_Connection=yes"
            cookieless="false" 
            timeout="20" 
    />

    <!--  GLOBALIZATION
          This section sets the globalization settings of the application. 
    -->
    <globalization requestEncoding="utf-8" responseEncoding="utf-8" />
   
  </system.web>

    <system.net>
    <mailSettings>
      <smtp from="[email protected]">
        <network host="localhost"/>
      </smtp>
    </mailSettings>
  </system.net>

</configuration>

service.request.ascx.vb

Code:

Public Class serviceRequest1
    Inherits System.Web.UI.UserControl

#Region " Web Form Designer Generated Code "

    'This call is required by the Web Form Designer.
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()

    End Sub
    Protected WithEvents problemDescription As System.Web.UI.HtmlControls.HtmlTextArea
    Protected WithEvents instructions As System.Web.UI.HtmlControls.HtmlTextArea
    Protected WithEvents submit As System.Web.UI.HtmlControls.HtmlInputButton
    Protected WithEvents companyName As System.Web.UI.HtmlControls.HtmlInputText
    Protected WithEvents yourName As System.Web.UI.HtmlControls.HtmlInputText
    Protected WithEvents machineMake As System.Web.UI.HtmlControls.HtmlInputText
    Protected WithEvents machineModel As System.Web.UI.HtmlControls.HtmlInputText
    Protected WithEvents address As System.Web.UI.HtmlControls.HtmlInputText
    Protected WithEvents phone As System.Web.UI.HtmlControls.HtmlInputText
    Protected WithEvents email As System.Web.UI.HtmlControls.HtmlInputText
    Protected WithEvents operating As System.Web.UI.HtmlControls.HtmlInputRadioButton
    Protected WithEvents notOperating As System.Web.UI.HtmlControls.HtmlInputRadioButton
    Protected WithEvents anyTime As System.Web.UI.HtmlControls.HtmlInputRadioButton
    Protected WithEvents businessHoursStart As System.Web.UI.HtmlControls.HtmlInputText
    Protected WithEvents businessHoursEnd As System.Web.UI.HtmlControls.HtmlInputText
    Protected WithEvents ValidationSummary1 As System.Web.UI.WebControls.ValidationSummary
    Protected WithEvents reqCompanyName As System.Web.UI.WebControls.RequiredFieldValidator
    Protected WithEvents reqProblemDescription As System.Web.UI.WebControls.RequiredFieldValidator
    Protected WithEvents reqYourName As System.Web.UI.WebControls.RequiredFieldValidator
    Protected WithEvents reqPhone As System.Web.UI.WebControls.RequiredFieldValidator
    Protected WithEvents callFirst As System.Web.UI.HtmlControls.HtmlInputRadioButton

    'NOTE: The following placeholder declaration is required by the Web Form Designer.
    'Do not delete or move it.
    Private designerPlaceholderDeclaration As System.Object

    Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
        'CODEGEN: This method call is required by the Web Form Designer
        'Do not modify it using the code editor.
        InitializeComponent()
    End Sub

#End Region

    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'Put user code to initialize the page here
    End Sub

    Private Sub submit_ServerClick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles submit.ServerClick
        Dim eml As New System.Web.Mail.MailMessage
        eml.BodyFormat = Mail.MailFormat.Text

        eml.From = "[email protected]"
        eml.To = "[email protected]"
        eml.Subject = "[Online Service Request]"
        eml.Body = "Online Service Request" & vbCrLf & vbCrLf & _
        "Company Name: " & companyName.Value & vbCrLf & _
        "Customer Name: " & yourName.Value & vbCrLf & _
        "Machine Make: " & machineMake.Value & vbCrLf & _
        "Machine model: " & machineModel.Value & vbCrLf & _
        "Address: " & address.Value & vbCrLf & _
        "Phone: " & phone.Value & vbCrLf & _
        "Email: " & email.Value & vbCrLf & _
        "Business Hours: "

        If anyTime.Checked Then
            eml.Body &= "Anytime between " & businessHoursStart.Value & " and " & businessHoursEnd.Value & vbCrLf
        Else
            eml.Body &= "Call First" & vbCrLf
        End If

        eml.Body &= "Machine Operating Status: "
        If operating.Checked Then
            eml.Body &= "Operating OK" & vbCrLf
        Else
            eml.Body &= "NOT Operating" & vbCrLf
        End If

        eml.Body &= vbCrLf & "Problem Description:" & vbCrLf & vbCrLf & _
        problemDescription.Value & vbCrLf & vbCrLf & _
        "Additional Details:" & vbCrLf & vbCrLf & _
        instructions.Value


        SmtpMail.SmtpServer ="localhost"
        SmtpMail.Send(eml)

    End Sub
End Class

I've changed the web.config and service.request.ascx.vb to reflect changes advised in the forums and in the knowledgebase. However I still get the COMException (0x80040213): The transport failed to connect to the server error.