>Hi everybody,
>
>I need an understanding of conceptual difference between SMTP email and email sent to Exchange Server?
>
>Here is why. My application is sending email messages to SMTP (using WWIPSTUFF). Everything worked perfectly until customer started to block SMTP mail from desktop computers. They say they now allow only email to Exchange Server from desktops. How are the two different? What tools do I need to send email from VFP application to Exchange Server?
>
>Thank you in advance for any help.

I understand blocking SMTP from machines besides the server to stop spamming but the I.T. person should be made to understand that SMTP from authenticated domain users is not bad practice.