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Re: 550-Firewall Error

From: mouss (mlist.onlyfree.fr)
Date: Thu Sep 27 2007 - 09:22:44 CDT


Dennis Putnam wrote:
> Thanks for the reply. As I mentioned in a previous response to another
> contributer, I may not have bee clear enough. First I think here are 2
> servers involved and the clients are irrelevant. The error is occuring
> between the sender's server and my (recipient's) server.
>
> It is certainly possible there is a lookup delay on the sender's server
> but I need a better definition of what the error is and some way to
> determine which server is generating the error.
>
> I can add that the error message the sender gets comes from the
> MAILER-DAMON on the sender's side. Can I draw any conclusions from that?
> I looked at my postfix log at the time the message was bounced and
> cannot find any attempt from that server to contact mine. I have to
> assume that it was not my server that produced that error but rather the
> sender's server and it was unable to find my server's address for some
> reason.

if there is no postfix log, then the transaction did not reach your
postfix. so this is not a postfix related issue.

and with only two lines of a bounce message, we don't even know which
system sent the bounce...