sometimes he can send the mail to [email protected] and some other times he can’t, no change in configuration.
The client can receive emails from outside and he can reply the e-mail back to the sender. However, when he open a new e-mail (compose) and choose a person from a contact list then send it he got the same massage.
The server is windows 2003 sp1 with exchange 2003 + McAfee groupshield. Any ideas