The "Debug mode" problem is coming threads where one or more of the posters has requested e-mail notification of posts to the thread. If the service provider's outgoing e-mail server does not send the message for whatever reason, it generates an error code and the debug message. I can only surmise that the service provider's system is mis-flagging some of the notifications as either spam or virus. What I don't understand is why the problem arises only occasionally

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The good news is that the error is generated *after* the message has been posted, so the short-term solution is to simply ignore it and return to the Forum.
Possible long-term solutions:
- I can go in and disable the e-mail notification function, but that means that you will no longer be able to get e-mail notifications of responses to posts.
- I can go in and disable error checking, but I don't want to implement that unless/until I'm sure that it won't allow a serious problem to crash the whole system.