ELMAH - Error Loggin Module and Handler For unhandled errors in asp.net

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <configSections>
    <sectionGroup name="elmah">
      <section name="errorLog" requirePermission="false" type="Elmah.ErrorLogSectionHandler, Elmah" />
      <section name="errorMail" requirePermission="false" type="Elmah.ErrorMailSectionHandler, Elmah" />
      <section name="errorFilter" requirePermission="false" type="Elmah.ErrorFilterSectionHandler, Elmah"/>
    </sectionGroup>
  </configSections>
  <connectionStrings >
    <add name="elmah-sql" connectionString="Data Source=xxx;Initial Catalog=ELMAH;Trusted_Connection=True" />
  </connectionStrings>
  <elmah>
    <errorLog type="Elmah.SqlErrorLog, Elmah" connectionStringName="elmah-sql"   >
    </errorLog>
  </elmah>
  <system.web>
    <httpModules>
      <add name="ErrorLog" type="Elmah.ErrorLogModule, Elmah"/>
    </httpModules>
    <httpHandlers>
      <add verb="POST,GET,HEAD" path="elmah.axd" type="Elmah.ErrorLogPageFactory, Elmah" />
    </httpHandlers>
    <customErrors mode="On" defaultRedirect="CustomeErrorPage.htm" />
  </system.web>
</configuration>