trinity-devel@lists.pearsoncomputing.net

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Month: February 2011

Re: [trinity-devel] bugs.pearsoncomputing.net - DNS entry causing confirmation email to be rejected by postfix 'reject_unknown_client'

From: "Timothy Pearson" <kb9vqf@...>
Date: Mon, 28 Feb 2011 17:22:54 -0600
> Tim,
>
>   I went to register for the bugzilla and found that the confirmation
> request
> from 74.84.118.181 was rejected by postfix because 74.84.118.181 does not
> provide a proper reverse lookup causing:
>
> smtpd_client_restrictions = reject_rbl_client sbl.spamhaus.org,
> reject_unknown_client
>
>   It is 'reject_unknown_client' causing the rejection. From:
> http://www.postfix.org/postconf.5.html the rejection is caused when:
>
> 1) the client IP address->name mapping fails, 2) the name->address mapping
> fails, or 3) the name->address mapping does not match the client IP
> address.
>
>   I'm no postfix expert, but to let the confirmation through, I just
> removed
> 'reject_unknown_client'. If there have been people who don't get the
> confirmation emails, this may one reason why :)
>
>   The actual postfix rejection was:
>
> Feb 28 16:22:21 nirvana postfix/smtpd[6858]: warning: 74.84.118.181:
> address not
> listed for hostname pearsoncomputing.net
> Feb 28 16:22:21 nirvana postfix/smtpd[6858]: connect from
> unknown[74.84.118.181]
> Feb 28 16:22:22 nirvana postfix/smtpd[6858]: NOQUEUE: reject: RCPT from
> unknown[74.84.118.181]: 450 4.7.1 Client host rejected: cannot find your
> hostname, [74.84.118.181]; from=<bugs@...> to=<snip>
> proto=ESMTP helo=<vali.starlink.edu>
> Feb 28 16:22:22 nirvana postfix/smtpd[6858]: disconnect from
> unknown[74.84.118.181]
>
>   Somebody smart with postfix and bind can probably tell you what the
> exact
> issue is. Just looking, I see a helo from vali.starlink.edu and the
> "warning:
> 74.84.118.181: address not listed for hostname pearsoncomputing.net"
>
>

Hi David,

How exactly did you get this error?  My reverse DNS checks out OK and I
don't see any problems with a test registration on the Bugzilla.

Thanks!

Tim