You are unable to relay on that server, is the ip of your pc ion the relay list of the exchange server? -----Original Message----- From: Raed M. Dummor [mailto:raed@xxxxxxxxxxx] Sent: Thursday, September 05, 2002 9:04 AM 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: robert@xxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') This mail was content checked for malicious code and viruses by GFI MailSecurity. GFI MailSecurity provides email content checking, exploit detection and anti-virus for Exchange & SMTP servers. Spam, viruses, dangerous attachments and offensive content are removed automatically. Key features include: Multiple virus engines; Email content & attachment checking; Exploit shield - email intrusion detection & defence; Email threats engine - analyses & defuses HTML scripts, .exe files & more. In addition to GFI MailSecurity, GFI also produces the GFI FAXmaker fax server & GFI LANguard network security product ranges. For more information on our products, please visit http://www.gfi.com. This disclaimer was sent by GFI MailEssentials for Exchange/SMTP.