Hi Dave,
I don't know why this is happening;  your address for my inbox is correct.  However, I don't believe other people are experiencing this, are you sending it from work or from home?  If the former, try the latter;  your work server might be mistaken for a spam generator (???) who knows......
If this doesn't work, we can always use PM on this forum, it seems to work fine!!
Thanks for the reply, appreciated,
Cheers,
Hugh