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Accepted
Bartosz Kowalczyk
Asked: 2012-03-30 01:23:39 +0800 CST

Host rejected: cannot find your hostname - for one adress

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We have computer with 91.221.27.120, 91.221.27.119, 91.221.27.121 and 91.221.27.118. I set in postfix:

smtpd_client_restrictions =
    permit_mynetworks,
    warn_if_reject reject_unknown_client,
    warn_if_reject check_client_access hash:/etc/postfix/access,
    permit_sasl_authenticated,
    permit

When I add reject_unknown_client I get ONLY for 91.221.27.118

Mar 29 09:45:31 fo-mail postfix/smtpd[6132]: NOQUEUE: reject_warning: RCPT from
unknown[91.221.27.118]: 450 4.7.1 Client host rejected: cannot find your hostname, 
[91.221.27.118]; from=<[email protected]> to=<[email protected]> proto=ESMTP 
helo=<[172.16.210.24]>

I writed to access 

91.221.27.118 OK

It doesn't help.

Can you help me?

postfix configuration

1 Answers

  1. Best Answer

    rules in smtpd_client_restriction are checked in the same order as it written in the configuration directive. In your example, restrictive rule for reject_unknown_client is evaluating before permissive check_client_access. Try to change the order of those two directives. And, of course, you should have all your clients' IP's in access.

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