I have looked and this has been discussed in a different light but not specifically this way and the answers have not worked for me. I have several internal applications that I would like to have to send email updates/failures on processes that occur in the background. Some of the applications have not issues and others repeatedly fail with "authentication" issues or unspecified reasons. I see not reason why this should occur and was wondering if anyone had experience in general with applications like this and what the problem is and is it something I can set or is it not designed to work this way from the vendor. For the most part I can use my smart host and send that way but it should work and doesn't and I would like to know why.