I am running SuSE linux 6.1 and sometimes I have the following error: This happens when sending mail from MS Outlook Express. What can cause this error and what is the solution? The message could not be sent because the server rejected the sender's e-mail address. The sender's e-mail address was 'bwalyal@mopani.com.zm'. Subject 'test', Account: 'bwalyal', Server: '194.130.158.34', Protocol: SMTP, Server Response: '451 <bwalyal@mopani.com.zm>... Sender domain must resolve', Port: 25, Secure(SSL): No, Server Error: 451, Error Number: 0x800CCC78 However, when I checked the log called mail I discovered one error message saying -ERR password supplied is incorrect. Thank you in advance. Luckson -- To unsubscribe send e-mail to suse-linux-e-unsubscribe@suse.com For additional commands send e-mail to suse-linux-e-help@suse.com Also check the FAQ at http://www.suse.com/support/faq