On Thu, 29 Jan 2009, Jim Wright wrote: > On Jan 29, 2009, at 4:54 PM, Magnus Bäck wrote: > >> You can easily find the relevant log entries by grepping your maillog >> for the queue id, which is found in the first Received: header added by >> your system. In this case look at this header: >> >> Received: from TRXOMOPC (unknown [77.81.179.110]) by >> mail.russellhospital.org (Postfix) with ESMTP id A5D9154C3A7; Thu, 29 >> Jan 2009 14:32:44 -0600 (CST) >> >> Grep your log for A5D9154C3A7. > > Which brings us back to one of my favorite Postfix options: > reject_unknown_hostname
Which, in Postfix 2.3+, is reject_unknown_helo_hostname, and quite prone to false positives. Use with caution on a production server. -- Sahil Tandon <sa...@tandon.net>
