Mailinglist Archive: opensuse (2831 mails)

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[SLE] Postfix RCPT from unknown - Why?
  • From: "David Rankin" <drankin@xxxxxxxxxxxxxxxx>
  • Date: Wed, 26 Jul 2006 23:48:24 -0500
  • Message-id: <008301c6b137$e4b93b20$6106a8c0@xxxxxxxxxxxxxxx>
Listmates, Sandy in particular

After adding:

smtpd_client_restrictions = check_client_access
cidr:/etc/postfix/client_check.cidr, reject_rbl_client,
reject_rbl_client, reject_rbl_client,

I can't send mail from Postfix at home to postfix at work. The problem
is the "reject_unknown_client" restriction which causes the server at work
to reject the message. If I remove the restriction it works fine. The error

Jul 26 23:14:10 bonza postfix/smtpd[22176]: connect from
Jul 26 23:14:10 bonza postfix/smtpd[22176]: NOQUEUE: reject: RCPT from
unknown[]: 550 Client host rejected: cannot find your hostname,
[]; from=<> to=<>
proto=ESMTP helo=<>
Jul 26 23:14:11 bonza postfix/smtpd[22176]: disconnect from

(Note -- I inserted the #### stuff in this message to prevent the address
from being skimmed from list archives)

What I don't understand is why I get the log entry of "RCPT from
unknown[]"? is certainly known. It's Why is the "unknown" happening. Any ideas??? Is it a
problem with my home mail setup not sending a hostname?? (not likely, helo
got it) is it a domain mx record problem? Is it a timeout problem on the
reverse lookup?

Any help will be appreciated...

David C. Rankin, J.D., P.E.
Rankin Law Firm, PLLC
510 Ochiltree Street
Nacogdoches, Texas 75961
(936) 715-9333

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