Hi Ray,
Yes, it would appear that way because the e-mail is "From" my client to themselves, in order to prevent such spam blocking.
It's hosted with Fasthosts, so it could very well be on an e-mail blacklist such have been the problems with their hosting in the past that they're still recovering from (they won't admit this, but it's highlighted all over the Internet).
I attach the files in question.
Thank you.
NJ