Just check it our your Outgoing and Incoming Server settings. Your ISP not allow you to send email from an account not belonging to it. You may use another SMTP server which allows you to relay. Ray Tokyo -----Original Message----- From: Raed M. Dummor [mailto:raed@xxxxxxxxxxx] Sent: Thursday, September 05, 2002 4:04 PM To: [ExchangeList] Subject: [exchangelist] Problem in express http://www.MSExchange.org/ Hi Could any one guide me in this while using outlook express I have got this error message . The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was '----------'. Subject -----', Account: '------', Server: '-----------', Protocol: SMTP, Server Response: '550 5.7.1 Unable to relay for -----', Port: 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC79 Regards Raed ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: raymond.ma@xxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')