It's possible that he is right. As your tests show someting is wrong because attacments wasn't send properly. Maybe that 'wrong' also crashes mail server?

>Hi Sergey,
>
>I guess, we have to give up using Nigel's class with GroupWise and find something else. We have couple of crashes of GroupWise recently and our Network Administrator blames our tests for them. Here is the message he sent me:

< SNIP >