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[210.150.98.251]: 554 5.7.1 <makoto-****...@asmo.co.jp>: Relay access denied; from=<noriyuki-***...@yutaka-japan.com> to=<makoto-****...@asmo.co.jp> proto=SMTP helo=<Y4> (real emails are hidden) Other users from the same domain (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" 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