The e-mail messages from three internal Exchange accounts (including my own)
are delivered into the Junk E-mail folder by Outlook, for this one user.
The three accounts can't be added to the Safe Senders list (through right
click Junk E-mail Add Sender to Safe Senders list), because they are
internal and a message pops up saying: "The e-mail address for this sender
is internal to your organisation and cannot be added to this list."

The e-mail client is Outlook 2003, the e-mail server is Exchange 2003 SP2,
the OS is Windows XP Pro SP2. I've added the l and
to the Safe Senders list manually, but it didn't make any
difference.

The domain users have a X400 address also, beside the two SMTP addresses. I
don't think there is a way to add the X400 to the Safe Senders list and it
seems messages from this address are delivered into the Junk E-mail folder.
If I send messges through an external SMTP server, Outlook delivers the
message correctly into the Inbox, and doesn't move them to the Junk E-mail
folder afterwards.

So far, I couldn't find other solution than to disable the Junk E-mail
feature. Can anybody please help? Thanks!