I have a number of separate domains in my corp network, all Exchange 2003 servers and primarily Outlook 2003 clients - all are up to date with patching. Each domain mail service creates and sends calendar appointments/meetings perfectly, including the extended DST weeks. However, sending inter domain, or when receiving appointments from outside domains and companies, the time of the appointments are being set forward one hour. Any ideas on how I can track down and correct this seeming DST related issue? I've searched and searched but have found no references to my situation. Thanks!Mark

You might want to check whether the outside companies have the correct DST patching applied. This would explain a one hour time difference for appointments coming into your organisation. It would also explain the difference for users in other organisations viewing appointments sent from your organisation. If you know a friendly outside organisation that has definitely applied the patches correctly, try sending them appointments and see what happens. If there is still an issue, double-check your patching, especially on any SMTP Connector servers that handle mail to your perimeter mail servers. Tony

Good reply, Tony, thank you. I have made sure my servers are up to date, have tried all the tricks such as changing the time zone out of and back to my EDT zone. Interesting to note another test I've done: sending a meeting request from one domain Exchg server to another domain Exchg server inside my LAN results in the hour being bumped forward by one. Sending toexternal user mail accounts, I used a Google Calendar user account and a Yahoo mail account, worked perfectly. Grrrr!

And Tony wins! I found an Exchange server that didn't have KB926666 installed, the patch for Exchange Server. Boy, was that a pain in the tookus. Thanks, all!