Wierd Problem with Outlook Express (sending mail to Groups)

hi guys

i've got a wierd problem with outlook express 6.

i need to send an email to 83 recipients, so i have put them all in Group - i sent the email out last week and got no replies whatsover.

when i set up a test group with about 10 of my own email addresses - i only received 1 email (the first addres in the group)

i've repeated this several times and the same thing happens - i.e. i only ever receive the email to the first address in the group

am i missing soemthing!!!!!!

cheers