All sent emails come back with a System Administrator message. Some contacts
receive the email, most do not.
Are you authenticating properly to your outgoing mail server?

Signature
Jocelyn Fiorello
MVP - Outlook
*** Messages sent to my e-mail address will NOT be answered -- please reply
only to the newsgroup to preserve the message thread. ***
> All sent emails come back with a System Administrator message. Some contacts
> receive the email, most do not.