High numbers of transaction logs are generated.The Mailbox store database may become unstable.You may experience one or more of the following symptoms if the attachment You have to consider the increase load a large attachment puts on the server infrastructure. Increasing the allowed attachment size may cause performance issues in the Exchange environment. This size further expands to additionalįor this reason set the above limits (step 1 to 5) to about double the original attachments' file size. Entourage and Mac Outlook 2011 show the size of the expanded attachment in the GUI. This encoding increases the size of the attachment by about 33%. Configure Transport Settings PropertiesĮntourage and Mac Outlook 2011 clients encode attachments in MIME.
Make sure Transport settings and Individual users mailboxes supports above limit. Seconds (make sure the value is greater than the time it take to upload the file) Open " IIS Manager" > select " Default Web Site" > Click " Advanced Settings" > select " Connection Timeout" and change the value in Change " connectionTimeout" settings in IIS. Make sure the value is greater than the time it takes to upload the file. Where “ X” is the desired time in seconds. Open web.config file located in the EWS Virtual directory " Microsoft\Exchange Server\ClientAccess\exchweb\EWS"
Where “ XX” is the desired value in Kilo Bytes.Ĭhange " executionTimeout" parameter in " web.config" file: Open " web.config" file located in the EWS Virtual directory " Microsoft\Exchange Server\ClientAccess\exchweb\EWS" will have the following entryīy default, the max request size is approximately 13MB. In the event you are using a Small Business Server, replace "Default Web Site/ews"Ĭhange " maxRequestLength" parameter in " web.config" file: To resolve this issue, we need to follow below steps on the Exchange Client Access Servers in order to allow large attachments for EWS clients such as Entourage and Mac Outlook 2011:Ĭhange " maxAllowedContentLength" parameter in " web.config" file:įrom CMD change folder to " %windir%\system32\inetsrv\" and run below command:Īppcmd set config "Default Web Site/ews" -section:requestFiltering -requestLimits.maxAllowedContentLength: Notes And the Entourage/Outlook 2011 client generates one of the below error codes. An e-mail message that is over the attachment size limit is moved to the " Drafts" folder.
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