On 2 users' calandar message and calendar message change update request are returned withReporting-MTA: dns;torrenzano.comFinal-Recipient: Action: failedStatus: 5.1.1X-Display-Name: Orgon, Edward A.This only occurs on calendar requests or updates and made through a distribution group. I've deleted the distribution group and recreated. Any ideas? Thanks.

Hi, Please check whether the delegate issue existed on the user. Hope the link can help: http://support.microsoft.com/?id=312433 Thanks Allen