On Tue, 2005-01-04 at 08:54, Mike Klinke wrote: > > I know the concept but the question should probably better be - > > why can I send 10 mails to the list one day witout issues, the > > next day I only send three - the first and third go through > > without issues but the middle one gets greylisted... > > > Perhaps they simply didn't all go through the same server. Look at > your received mail headers to see which RH mail server(s) is/are > involved in your question. I'm not with RedHat in any way, but: It seems more likely to me that the cause of the inconsistency is due to the ip address of sender's email server is changing. I can't imagine an organization like RH implementing greylisting in such a spotty fashion. The three things that most greylist software looks for are: 1) ip address of the sender's mail relay 2) "To:" address 3) "From:" address So if any of these are different, your message will get greylisted. HTH, Jay