How to Export Large size EDB Mailboxes from Exchange 2010 to PST?

Admin | October 24th, 2018 | Exchange Server, Export

There are several situations where Exchange administrator wants to export Exchange mailboxes to PST. However, an email often carries more than just a text message. An email may include lots of information in their attachments. Due to which the size of mailboxes increases. But, Exchange has a default size limit, so it creates a problem when mailboxes exceed the default size limit. Hence, people are looking for a solution to export large size EDB mailboxes from Exchange 2010 to PST format but they do not get. In this blog, we will try to resolve this problem.

How to Fix Large Size Issue While Migration of EDB Mailboxes?

When people try to export a large size of mailbox from Exchange to PST, there are chances that process stops in between or shows the blank PST file in Outlook. This situation can be tiresome for users. So, they need a solution to resolve this large file size issue. However, Exchange provides a feature to set the default size limit for mailbox and attachments. Basically, there are three places where an administrator can configure the default message size limits on Microsoft Exchange Server:

  • Organization transport settings
  • Send/receive connector settings
  • User mailbox settings

Now, you can check the current limit of your Exchange Server. You can easily open and access them with the help of either Exchange Management Console (EMC) or PowerShell command. Run the following commands in Exchange Management Shell to set the limit:

get-transportconfig | ft maxsendsize, maxreceivesize
get-receiveconnector | ft name, maxmessagesize
get-sendconnector | ft name, maxmessagesize
get-mailbox Administrator |ft Name, Maxsendsize, maxreceivesize

To set up the size limit of attachments in the Exchange, you can use the PowerShell script that is given below:

New-TransportRule -Name LargeAttach -AttachmentSizeOver 10MB -RejectMessageReasonText “Message attachment size over 10MB – email rejected.

After running these commands, you can set the default size limit for Exchange mailbox and their attachments. But, when the size of mailbox exceeds in another case, you need to set the default size in Exchange again. Because different mailboxes can be of different sizes. This is a difficult task to change the settings of Exchange mailboxes size again and again.

If you do not face the file size limitation problem in Exchange and migrate the Exchange mailboxes in PST format. Then, the next challenge is to import this large size of PST file into Outlook. As we know, Outlook supports its own default size limit of the file. And, it is not possible to import a heavy PST file into Outlook.

Exchange Export Issues

Issues While Dealing with Large PST file In Outlook Application

If you try to import a large size of PST file in Outlook, then your Outlook application may stop or pause while reading, moving, or deleting emails. To get rid of this situation, Microsoft Outlook allows users to split the large PST file into various smaller parts. It can be done according to the date based filter. After splitting the PST file, it will be easily imported into the Microsoft Outlook. This solution can resolve the exporting large size EDB mailboxes from Exchange 2010 to PST issue. But, the procedure takes a long time. Also, there is a chance that it shows a blank file or fails to execute.

Ultimate Solution to Export Large size of Exchange Mailbox to PST

If you need an error-free solution to migrate any size of Exchange mailboxes to PST format, then you should opt a commercial solution like SysTools Exchange Export Tool. This software is designed with such algorithm which can export Exchange mailboxes to PST of large size format without any trouble. After exporting, it also gives a feature to divide the resultant PST file into multiple parts according to your defined size. It helps a lot at the time of importing PST file into Outlook application. In addition, this application does not need any external help to perform the migration of large Exchange mailbox to PST.

Wrapping Up

Exchange administration always needs to transfer their mailboxes into Outlook application. But, it creates a problem when an admin has a large size of Exchange mailbox. So, we have discussed here how to export large size EDB mailboxes from Exchange 2010 to PST. In addition, the process of setting the default size limit in Exchange and splitting PST file is also described in this post.