In oups.com,
tezarin honia.azizi@**** typed:
Hi. We have a problem in our office, when I send an email to
everyone, they can see it's from me, so the From section is not empty
which is normal. What is not normal is when I send emails to 3
people, they say the "FROM" part of the email they received from me
is empty!

Please let me know what should I do to solve this problem.
honia2002@*******

Thanks

Hi - When you post in here, always include your version, SP level, and mode
(if applicable) of Outlook - you can find this information in Help | About.
Also include the type of mail account(s) you use and any other pertinent
details. Be sure to put a consise summary of your question in the subject
line, and the full details in the body of your post.

That said - can you reproduce this when you email your own external
addresses?