Hello, The OTRS received the ticket by PostmasterPOP3.pl very well, but wen the aplication sends the autoresponse, the field from (Mail From) is blank, for ex: Connection with server SMTP is : Mail From:<> This field is refused by SMTP server, because is blank RCPT TO: In the Config.pm http://config.pm/ $Self->{'SendmailModule'} = 'Kernel::System::Email::SMTP'; $Self->{'SendmailModule::Host'} = ' x.x.x.x'; Wen i send mail by web front-end the otrs sends with the mail of queue. The error occur only the feature outoresponse. In the version 1.31 the otrs sends mail from: That is a bug or there is a configuration where i can force this?