Over the last three weeks, I have been getting the following error message for emails that have been bounced;-

"Delivery has failed on the enclosed message for the following
reasons reported either by the mail delivery system on the mail
relay host or by the local TCP/IP transport module:

550-We're sorry, but we can't send your email. Either the subject matter, a
link, or an attachment potentially contains

Your original mail message follows:

X-PM-Identity: <Default>
From: "David T-C." "

If anybody can offer an explanation or reason, that I am getting this message, I would be eternally grateful.

David Tarbox-Cooper (aka DavidTC44)