Hi, I am not able to send email in the OTRS system to external people. When I send to internal staff it's ok. Here is the error. Anyone has any ideas? ERROR: OTRS-CGI-10 Perl: 5.10.0 OS: linux Time: Tue Dec 29 15:07:09 2009 Message: Can't send to 'kazak@gmail.com': 5505.7.1 Unable to relay ! Enable Net::SMTP debug for more info! Traceback (2239): Module: Kernel::System::Email::SMTP::Send (v1.25) Line: 131 Module: Kernel::System::Email::Send (v1.64) Line: 683 Module: Kernel::System::Ticket::Article::ArticleSend (v1.232) Line: 2024 Module: Kernel::Modules::AgentTicketCompose::Run (v1.81.2.1) Line: 416 Module: Kernel::System::Web::InterfaceAgent::Run (v1.43.2.1) Line: 819 Module: /opt/otrs/bin/cgi-bin/index.pl (v1.88) Line: 48 Regards, Zak ##################################################################################### This email is confidential and intended solely for the use of the individual to whom it is addressed. If you are not the intended recipient, be advised that you have received this email in error and that any use, dissemination, forwarding, printing or copying of this email is strictly prohibited. If you have received this email in error please contact the sender. #####################################################################################