Try this: but note it will only work if SMTP is enabled on your exchange server.
Function sendemal()
Dim objEmail As Object
Set objEmail = CreateObject("CDO.Message")
objEmail.From = "[EnterReplyToAddress]"
objEmail.To = "[EnterToAddress]"
objEmail.CC = "[EnterCCAddress]"
objEmail.bCC = "[EnterBCCAddress]"
objEmail.Subject = "[Subject line details]"
objEmail.textbody = "[message]"
objEmail.Configuration.Fields.Item("
Error") = 2
objEmail.Configuration.Fields.Item("
Error") = "[Enter your exchange server name or IP address]"
objEmail.Configuration.Fields.Item("
Error") = [Your server port, try 25]
objEmail.Configuration.Fields.Update
objEmail.Send
End Function