Why Emails Disappear When 2 Outlooks Are Open?

We are using Outlook 2003 non cached mode running on exchange 2003.I have recently had 3 users who have had there profile setup on a PC at a new location while still having an active profile on there old PC we do this because we do not have roaming profiles. When they had there e-mail open on one PC they then where setup on the other, there e-mail from the old PC started to disappear it effects there e-mail for that day and up to 2 weeks I checked the server through our Recovery Manager software and there e-mail is gone. The e-mails are not deleted they are not archived there are no filters setup. At one point while I was looking into the problem I logged on one of the users PC went into there e-mail as I was looking at the settings all there e-mail started disappearing. Any ideas?

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Answer #1: Posted by EgonVarga on October 27th, 2015 5:33 AM

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EgonVarga

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October 27th, 2015

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You can read this source on this issue, if you have the desire and time. https://answers.yahoo.com/question/index?qid=20140704123737AAhX3GL

This sounds like the delivery location in outlook on the second machine is setup to be on the local machine and not the exchange mailbox. In Outlook 2003 you can check this by going to tools/account settings. Highlight the exchange mailbox. On the bottom of the e-mail tab it should say something like:

Selected e-mail account delivers new e-mail messages to the following location:
Mailbox - Username\Inbox
in data file C:\whateverthepathis\outlook.ost
If it shows a pst file then the email will be delivered to it instead of the mailbox on exchange. If no then try to restore .pst file and again to verify your account. I think the problem will be solved.
Also read this article https://support.microsoft.com/en-us/kb/272227