Srs, When a internal user of my network send any e-mail to someone, the folow error is displayed: " Your message did not reach some or all of the intended recipients. Subject: Just a test Sent: 19/7/2004 17:58 The following recipient(s) could not be reached: usercontact (E-mail) on 19/7/2004 17:58 You do not have permission to send to this recipient. For assistance, contact your system administrator. <mymailserver.com.br #5.7.1 smtp;501 5.7.1 Content filter bulk mailer rejection>" How can I solve this problem !? Win2000 / Exchange2000 Thanks for all, André Vilares