From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: To: 9fans@cse.psu.edu Subject: Re: [9fans] anyone know what this could be? Date: Tue, 10 Oct 2006 22:51:30 -0400 From: geoff@plan9.bell-labs.com In-Reply-To: <452C591C.4060402@lanl.gov> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Topicbox-Message-UUID: c85731b6-ead1-11e9-9d60-3106f5b1d025 I think it's upas returning the message after trying to deliver it for 48 hours but receiving a "temporary" rejection each time, probably due to (broken) greylisting or SPF or a full disk. How often do you run your (outside) mail queue from cron?