Net::SMTPFatalError: 550 Administrative prohibition

I have used the following code before
but for some reason I'm getting an error.
Any ideas?

Thanks!

Net::SMTPFatalError: 550 Administrative prohibition

Net::SMTP.start(
   'mail.myServer.com',
   25,
   'mail.myServer.com',
   userName,
   password,
   :login) do |smtp|
        smtp.sendmail( msg, "from@me.com", "to@you.com" )
      end

reply (774 Bytes)

Net::SMTP.start(
   'mail.myServer.com',
   25,

What OS are you using? Try a port beyond 1024.
Are you running that code in a restricted account?

--David Ross

···

   'mail.myServer.com',
   userName,
   password,

   :login) do |smtp|

        smtp.sendmail( msg, "from@me.com", "to@you.com" )
      end