and has started recently with no changes to MailEnable. It only happens to a few random addresses in any domain.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.
The Inbound Port settings is not set to "Require Connections to authenticate...". The Relay settings are set to allow all possible IP address that connect to the ME server and Deny all others. Advanced SMTP Inbound authentication is set to "Do not require authentication'.
Mail is being set to a local Smart Host from the ME server so the ME server is not sending directly to the remote recipient directly.
Code: Select all
01/06/12 13:55:47 SMTP-IN 36602FCBD3FE40D19D3CB53D9148AD7B.MAI 792 xx.xx.xxx.xx EHLO EHLO hostname 250-mailhost.mydomain.com [xx.xx.xx.xx], this server offers 2 extensions 95 17
01/06/12 13:55:47 SMTP-IN 36602FCBD3FE40D19D3CB53D9148AD7B.MAI 792 xx.xx.xxx.xx MAIL MAIL FROM:<customer@mydomain.com> 250 Requested mail action okay, completed 43 40
01/06/12 13:55:47 SMTP-IN 36602FCBD3FE40D19D3CB53D9148AD7B.MAI 792 xx.xx.xxx.xx RCPT RCPT TO:<user@sbcglobal.net> 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. 235 37
01/06/12 13:55:47 SMTP-IN 36602FCBD3FE40D19D3CB53D9148AD7B.MAI 792 xx.xx.xxx.xx RSET RSET 250 Requested mail action okay, completed 43 6
01/06/12 13:55:47 SMTP-IN 36602FCBD3FE40D19D3CB53D9148AD7B.MAI 792 xx.xx.xxx.xx QUIT QUIT 221 Service closing transmission channel 42 6 