That's why I post here. To get advice on the obvious.

Instead of logging to a file I've formatted everything that's used to make the original email and tossed that into the body another email I send to myself at the same time. So far it looks like everything that would be logged to a file is coming through OK. With the added benefit that I don't have to FTP the file to read it.

I made some small alterations to the mail script this afternoon as well, so it will be interesting to see if anything else comes through.