This information applies to Microsoft Exchange 2000 Server. Sometimes you need to reset the directory synchronization (dirsync) sequence numbers when you are troubleshooting Microsoft Mail directory synchronization problems with a Microsoft Exchange 2000 server that is participating as a requestor or as the dirsync server. Only reset dirsync numbers as part of a systematic approach to troubleshooting dirsync problems as documented in the application note, "WA0725, Microsoft Mail for PC Networks Directory Synchronization," which you can download from the following Microsoft FTP location: ftp://ftp.microsoft.com/bussys/mail/pcmail-public/WA0725/