Hi Bob, I am agreeing that this is likelk an Outlook issue and will take it to the Outlook forum...
FYI, I should have mentioned previously, that I am at work and we are on an Exchange server-that may have something to do with it.
Anyway, I have tried the e-mail address in the traditional,
name@domain.com form as well as the lastname, firstname form used here at work. And I have confirmed the use, or in this case the non-use of quotes.
I attached the test file.
Thanks
Dave