The sendmail server is not allowed to relay on the exchange server. go to the smtp server properties of exchange server and add the ip of the sendmail server in the relaying options. Like this it should work cause the error is just relaying... -----Original Message----- From: alanleyva@xxxxxxxxxxxx [mailto:alanleyva@xxxxxxxxxxxx] Sent: Monday, June 10, 2002 6:01 PM To: [ExchangeList] Subject: [exchangelist] RE: Problem with smart host http://www.MSExchange.org/ - Re-Vamped! No the message reaches to send mail server and when the Send Mail try to reach the Exchange Server generate the following report: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ The original message was received at Mon, 10 Jun 2002 15:37:14 GMT from [172.20.1.55] ----- The following addresses had permanent fatal errors ----- pruebacorreo@xxxxxxxxxxxxxxxxxx (expanded from: <pruebacorreo@xxxxxxxxxxxx>) ----- Transcript of session follows ----- ... while talking to exchg.cimex.com.cu.: >>> RCPT To:<pruebacorreo@xxxxxxxxxxxxxxxxxx> <<< 550 5.7.1 Unable to relay for pruebacorreo@xxxxxxxxxxxxxxxxxx 550 pruebacorreo@xxxxxxxxxxxxxxxxxxxxx User unknown Reporting-MTA: dns; mail.cimex.com.cu Received-From-MTA: dns; [172.20.1.55] Arrival-Date: Mon, 10 Jun 2002 15:37:14 GMT Final-Recipient: rfc822; pruebacorreo@xxxxxxxxxxxxxxxxx X-Actual-Recipient: rfc822; pruebacorreo@xxxxxxxxxxxxxxxxxx Action: failed Status: 5.1.1 Remote-MTA: dns; exchg.cimex.com.cu Diagnostic-Code: smtp; 550 5.7.1 Unable to relay for pruebacorreo@exchg. cimex.com.cu Last-Attempt-Date: Mon, 10 Jun 2002 15:37:15 GMT ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~ ~~ -----Original Message----- From: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx> Sent: Monday, June 10, 2002 5:31 PM To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx> Subject: [exchangelist] RE: Problem with smart host http://www.MSExchange.org/ - Re-Vamped! When a mail is sent TO your organization it reaches directly to exchange server? -----Original Message----- From: Alan Leyva Acosta [mailto:alanleyva@xxxxxxxxxxxx] Sent: Monday, June 10, 2002 4:30 PM To: [ExchangeList] Subject: [exchangelist] Problem with smart host http://www.MSExchange.org/ - Re-Vamped! I have instaled an Exchange Server 2000, we configured the server to send all messages to a smart host (send mail, Unix), when I send a message outside the organization there is not problem, but when anybody write to a mailbox in my organization there is a problem and the destination recipient could not be reach. ------------------------------------------------------ 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 MailSecurity. MailSecurity provides email content checking, exploit detection and anti-virus for Exchange. Spam, viruses, dangerous attachments & 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 MailSecurity, GFI also produces the FAXmaker fax server & LANguard network security product ranges. For more information on our products, please visit http://www.gfi.com This disclaimer was sent by Mail essentials for Exchange/SMTP. ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: alanleyva@xxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ 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 MailSecurity. MailSecurity provides email content checking, exploit detection and anti-virus for Exchange. Spam, viruses, dangerous attachments & 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 MailSecurity, GFI also produces the FAXmaker fax server & LANguard network security product ranges. For more information on our products, please visit http://www.gfi.com This disclaimer was sent by Mail essentials for Exchange/SMTP.