Error 503 Mail Server Requires Authentication

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My Smtp Server Requires Authentication

server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server.', Port: 25, Secure(SSL): No, Server Error: 503, Error Number: 0x800CCC79 CAUSE The most likely reasons for this follow; MailEnable has not been configured to allow relay for authenticated users or the mail client has not been configured to authenticate against the MailEnable SMTP connector The AUTH Extension was not reported in the EHLO response from the server because the extension or verb for AUTH or EHLO have been disabled The mail client is configured to connect through an SMTP proxy or firewall and is not directly hitting the mail server at al

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Postmaster Pre-sales FAQ Publishing Your Site Reseller Tips Search Engine Optimization Security Topics SSL and HTTPS Support: Getting Help Virtual Desktops Virtual Servers Website Design & Development Website Errors Knowledge Essentials - 3Essentials Hosting ERROR: '503 This mail server requires authentication when attempting to send to a non-local e-mail a Article ID:85 Back to Search Symptoms And Errors:When attempting to send a email using your 3Essentials hosting account, your email client may report the following error message: '503 This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server.' OR '503 This mail server requires authentication. Please check your mail client settings.' The full error message may appear as: The message could not be sent because one of the recipients was rejected by the server. The rejected e-mail address was 'emailaddress@domain.com'. Subject 'Email Subject', Account: 'Your Account Name', Server: 'mail.yourdomain.com', Protocol: SMTP, Server Response: '503 This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server.', Port: 25, Secure(SSL): No, Server Error: 503, Error Number: 0x800CCC79 However, receiving email works correctly. Cause:This error message is reported by the e-mail server toyour email client such as Outlook or Outlook Express because the check box labeled "My Server Requires Authentication" is not checked. Your email client attempts to send the email to the server without providing a password, hence the server replies that you are not allowed to relay without proper a