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Managing mail flow in Exchange Server plays a vital role in effective database management. Heavy attachments in emails cause data to pile up and consume extra storage space. However, as a solution to this issue, it is possible to set email size limits within Exchange Server using Exchange Management Shell and Exchange Admin Center. But before that users should plan or consider some aspects related to the message size limits.
Microsoft limits the size limit for emails in Exchange Server due to several security reasons. In the absence of limitation, the server will receive many large email files and create a bottleneck situation in processing.
When an incoming email message reaches the pre-determined size limits, then it can cause many problems in the account. Some of the error message are following-
Keeping these considerations in mind, let us understand how we can alter the default mail size limits in Exchange Server 2013.
First, open Exchange Management Shell on your Exchange Server. Check the current server limit on emails by running the following cmdlets.
To check the Transport service emails limits, run this command:
To check receive/send connector service email limits, run the following command:
NOTE: Use “send” in place of “receive” in cmdlet to check send connector service emails limit
Now to change the emails size received by the Transport service, execute the following cmdlet:
NOTE: You can either increase or decrease message size limit using the above cmdlet.
Also, you can set limits for the results of the get-transportconfig cmdlets as:
NOTE: The above cmdlets do not consider if the attachments are included or not. Large messages with no attachments might stop immediately.
To set a Transport rule to avoid receiving attachments above a certain size limit (here 10MB) and to display a message, run the following cmdlet:
Thus, you can make use of Exchange Management Shell to manage the email size limit of your Exchange Server. Let us have an easier way to set these limits, through the Exchange Admin Center.
You can set a new rule form EAC as:
Exchange Admin Center allows setting the email size limit flowing into the server. To do this, perform the steps one-by-one:
With these methods, you can manage Exchange data growth up to some extent. However, if you face issues like Exchange database corruption, you should try some tools that can recover data from EDB files.
Kernel for Exchange Recovery, an automated tool for Exchange recovery and migration, works for recovering inaccessible EDB data to Outlook PST, Microsoft 365 and more destinations.
Exchange Server gets affected by the huge size of emails. We can solve this issue by changing the maximum limit of email sizes at different ends of mail flows. However, if you are facing issues due to the corruption of Exchange database files, you should recover data from the corrupt EDB files using an Exchange recovery tool like Kernel for Exchange Server. It repairs data efficiently and migrates it precisely to different destinations.