Hi Greg,
I'm assuming of course that you're not making any mistakes when addressing the outgoing packets. You might want to check that carefully. It would be a bummer if that was the root of the problem.
>> But this message is troubling. Are you saying that the server that I am sending it to might be a valid server and that server is down temporarily? Or that they may have network problems that prevent the server from being reached?
no, I was alluding to the transient nature of programs. So just because you have a machine in the list, there's no guarantee the user on that machine won't close the program. But sure, if there are network issues you're gonna see problems in this area as well.
It sounds like you're coping with the issue correctly though - you just keep retrying till the message goes through. All you need to do is suppress the error that pops up.
cheers
Bruce