Am 25.04.2011 23:48, schrieb motty.cruz: > Hello, > > One of our clients is trying to send us email and this is what I see in the > Logs: > > # grep -i “u...@tld.com" /var/log/maillog | more > > Apr 25 06:49:01 host postfix/smtpd[27269]: NOQUEUE: reject: RCPT from > unknown[xxx.xxx.xxx.xxx]: 554 5.7.1 Client > host rejected: cannot find your hostname, [xxx.xxx.xxx.xxx]; > from=<u...@tld.com> to=<m...@tld.com> proto=ESMTP > helo=<clienthost.tld.org>
look at your "smtpd_recipient_restrictions" i guess the sender has no valid ptr without the xxx.xxx.xxx.xxx you could get a better answer herebecause anybody can check dns/reputation of your client instead guessing
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