It seems the message is sent by Microsoft Office Outlook. The text is:
"Un programa esta intentando enviar correo electrónico automaticamente en su nombre.
¿Desea Permitirlo?
Si esto es inesperado, puede que sea un virus y debería elegir 'No'"

In english is something like:
"A program is trying to automatically send email in your name.
Do you want to allow this?
If this is unexpected, this may be a virus and you should choose (or select) 'No'"



>We never received that message. Furthermore, our apps run in several windows terminals without problems.
>Who exactly sends the message? Windows firewall ?
>Another firewall installed or an antivirus ?
>
>>Thanks a lot!!
>>I had to comment several things on the source code, because I'm programming with VFP 6.0..
>>
>>There's still one problem.. When the program exceutes, the operating system shows an alert window indicating there's an application trying to send an email.., how can I overide this message?
>>
>>>Jonathan, we're using CDOS Sys with excellent results.
>>>You don't need Third-party software, neither Outlook or any client installed.
>>>Please check this great article:
>>>
>>>http://www.sweetpotatosoftware.com/SPSBlog/CommentView,guid,71acd54c-dcda-4dfa-b4ae-74854dd7947f.aspx
>>>
>>>
>>>>Hi.
>>>>I'm developing an application wich will run at night as a schedulled task in the server.. This application creates a log file with the results obtained. I would like to send an email with this file attached. Any suggestion?
>>>>
>>>>Thanks a lot in advance.