There is no good way of avoiding the issue since Microsoft is rolling out security patches to avoid dangerous scripts from abusing the Outlook MAPI. Since there is no way to tell if a program should be sending email from Outlook then the user must be prompted.

You can read an article about how to avoid the Outlook security issue here:
http://www.seekfordsolutions.com/Articles/HowToSendEmailFromYourProgram.asp

It is also located in the Articles section of UT.