Same global email, showing as different sizes in different mailboxes
We have one Exchange 2003 server SP2 installed, and users have been reporting large messages sizes for some of our global emails. Upon investigation, I have found that some users were seeing the true 45Kb mail size, and other users were seeing the size as upto 1Mb.Further investigation has led me to believe that the problem is only happening for mailboxes in 2 of our stores. we have 2 storage groups, the first with5 stores, one of which is displaying the issue above, and the second has 1 store (which also has the issue) and the public folder store.So,I created 6 test accounts, each with an email account created in a different store.I then left them for a week or so to allow so global mails to build up in them and I also sent a few test emails to them all with random attachments and content.I gave the first test account access to all the mailboxes and loaded them all up in one mail profile on a machine, to view the mailboxes and rule out that this is related to the outlook client.Opening the mailboxes i found that the accounts created in the first store (trust 100) and the final store (unlimited) were the 2 accounts that showed the larger mail sizes, the other 4 accounts all showed identical and correct sizes for the emails.The 2 Stores are set up the same except for the fact that one has mailbox size limits and the other doesnt, and their databases reside on 2 different disks (unlimited on its own disk and Trust 100 on the same disk as the other 4 stores in its Storage Group)I'm at a complete loss with this one, any information you could provide would be greatly appriciated. I have trawled google, technet, msexchange blogs and groups and i've come up blank on everything.
September 8th, 2009 1:28pm

Was this email sent to a DL? or individual users?Vinod |CCNA|MCSE 2003 +Messaging|MCTS|ITIL V3|
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September 8th, 2009 1:48pm

The helpdesk send out the global emails to all users by selecting them all and adding them to the BCC fieldI can create a DL for all staff and test how that works out.---tested - still experience the same issue ifI use a DL for my test accounts as opposed to adding the individual users to the email
September 8th, 2009 1:53pm

As a quick update, incase it is revelent, we recently removed a 5.5 exchange server that was acting as a Relay into the NHS network for external mail, but we are still operating in mixed mode for exchange (i.e. not 2003 native)
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September 9th, 2009 12:02pm

If this is E2k3 the first mailstore (aka the bind point for the store driver) likely retains the combination of STM+MAPI content, secondary deliveries tend to use the slow delivery and result in only the MAPI content.So, yes, same mail and different sizes.The easiest way to check this is to edit the messge and modify the body.If it reverts to something aproximating the size of the other mailboxes then you have identified the culprit.
September 9th, 2009 8:24pm

Hi,Did you check this issue OWA? Whether the same size (up to 1MB)is displayed as the Outlook in OWA?Could you forward the message to the user which hosted in the normal store and the problematic store respectively? then check the size of the message on the two users. What's the result?ThanksAllen
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September 10th, 2009 11:51am

Thank you for the advice guys. xC - I have tried editing the message and the size doesn't appear to be reverting, but i do understand what you are saying and i believe the issue is only showing up as so extreme in some cases due to the template the service desk are using to send out these global messages. Allen - Unfortunately, we dont have any OWA function within our exchange environment, its all accessed via Outlook clients on the network. Cheers Chris
September 11th, 2009 11:46am

Hi,Thank you for response.Now please try to move the problematic user to the normal store to check this issue.ThanksAllen
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September 11th, 2009 1:36pm

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