On 08/16/2010 10:44 PM, Alberto Lepe wrote:
Hello! One of the mail users have problems sending mails to other domains. Looking at the logs, they display: Aug 17 09:49:55 mail postfix/smtpd[24050]: NOQUEUE: reject: RCPT from *****.technowave.ne.jp <http://technowave.ne.jp>[210.150.98.251]: 554 5.7.1 <makoto-****...@asmo.co.jp <http://asmo.co.jp>>: Relay access denied; from=<noriyuki-***...@yutaka-japan.com <http://yutaka-japan.com>> to=<makoto-****...@asmo.co.jp <http://asmo.co.jp>> proto=SMTP helo=<Y4> (real emails are hidden) Other users from the same domain (yutaka-japan.com <http://yutaka-japan.com>) are not having problems with their accounts. Questions: 1) Why "helo" does not returns a domain name? - is that correct / normal? - "Y4" is a proxy server? 2) Does this user has "yutaka-japan.com <http://yutaka-japan.com>" as mail server in his/her mail client config? - Is there any way to know that? The normal way which I solve this kind of problem is adding that IP (210.150.98.251) to mynetworks setting. But I feel that is not the best way to do it. I would like to know why this is happening... I have no direct access to user's mail client settings so I have to assume his/her settings are correct. Thank you. A.Lepe
You should really look into using submission for user relayed email. This authenticates the sender and by all means DON'T keep adding IPs to mynetworks as it allows them to relay EVERYTHING.
-Matt
