I don't think you can get rid of X400 addresses. Also what you are seeing in the Sent items are probably not X400, but rather X500 addresses. X500 address was also known as Directory Name back in Exchange 5.5 and that's how Exchange 5.5 constructed the replies - based on the Directory Name.
The X500 address legacy still exists in Exchange 2000. Each mail-enabled user has a LegacyExchangeDN field. You can see it with help of ADSIEdit. It is automatically generated, but you can edit it (be prepared to update Outlook profile if you do that). Sincerely, Andrey Fyodorov, MVP Systems Engineer Messaging and Collaboration Spherion -----Original Message----- From: Matt Hoffman [mailto:[EMAIL PROTECTED] Sent: Monday, November 24, 2003 11:56 AM To: Exchange Discussions Subject: Silly Outlook Addressing Problem OK, I'm sure this is a newbie question, but I don't even know what to call this problem in order to look it up: After our upgrade to Exchange 2000 from 5.5 many of our users are experiencing a problem where they are getting undeliverable emails to other staff members. This is definitely a problem with the X400 addresses, since they have changed and the SMTP addresses have not (and in fact, when looking at their "sent item" I can see the old X400 address from the 5.5 system is still in there). So, I surmise that the problem has to do with how Outlook holds on to past email addresses. My guess is that the users are responding to old emails that came from users back when the old system was in place and are therefore getting the old X400 addresses. This is sticking in Outlook's "cache" (again, note that I'm not an Outlook expert) and causing problems when they then attempt to send to that user again. So, two possible related solutions: 1. get rid of the X400 addresses if they are not necessary. We have only one Exchange server and are not likely to get another. Do we really need them? 2. Figure out how to turn off Outlook's "caching" of email addresses. How does one do that? Is there a way to do it via Active Directory GPO's? Thanks for any help, Matt _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&; lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]
