On Oct 11, 2006, at 10:23 AM — 10/11/06, Timothy D Newcomb wrote:

> I have two private lists with members reporting that emails sent  
> out to
> the list by certain people on the list are not get through to them.
> They know this because when someone else on the list replies to the
> original message (back to the list), they see the reply which then
> contains the original message.  I am a list owner, not a list server
> admin so I am somewhat limited in diagnosing this from the server
> perspective (but our server admin would definitely help if I can tell
> him what to look for).  Does anyone have any recommendations for where
> to start ?  I am not seeing any list message delivery error reports  
> for
> these members concerning these messages.

I suggest the beginning point of this investigation is to ask the  
recipients to verify that their server is not filtering messages.  
More often than not, this kind of thing happens due to message  
filters such as those used by antivirus programs and spam blockers.