Mail server requires authentication problem

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dslchiphead
Posts: 69
Joined: Wed Jun 27, 2007 8:47 pm

Mail server requires authentication problem

Post by dslchiphead » Fri Jan 06, 2012 10:03 pm

I am starting to get the error
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.
and has started recently with no changes to MailEnable. It only happens to a few random addresses in any domain.

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		

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