On Oct 27, 2006, at 11:19 AM — 10/27/06, Charles Drawdy wrote:

> Thanks Valdis,
>
> I don't think we are being greylisted or blacklisted. Some of the  
> receivers get their message while others get it hours later. I  
> don't have access to the unix box so I don't know what the error  
> message were but I am asking another person who did to update me on  
> that.

What you really need to do is get a hold of one of those delayed  
messages and look at its header. You need the full header. The header  
will probably tell you where the point of delay is (or was). Once you  
know where the delay is, you can then go to the next step which is to  
contact the administrator for the server where the delayed hop took  
place to see if the problem can be investigated on that server.