Shulou(Shulou.com)06/03 Report--

There is such a problem these days that the mobile client of the Exchange 2010 mail system cannot send attachments above 10MB.

Problem description:

In the Exchange 2010 environment, both the mail receiver and sender restrictions are set for Outlook to send large emails on 35m Outlook, but mobile phones cannot send or forward emails of more than 10m.

Cause analysis:

The ActiveSync protocol is used to connect to the Exchange on the phone. This problem occurs because the default Max Request Length setting for ActiveSync on the Exchange server is 10MB. The mobile phone connects to Exchange using the ActiveSync protocol, which is somewhat different from sending email by Outlook on Windows computers.

Solution:

In Exchange 2010 environments, this problem occurs more often when large attachments cannot be sent on iOS devices. The mobile phone connects to Exchange using the ActiveSync protocol, which is somewhat different from sending email by Outlook on Windows computers. In this case, the event Event ID 1008 is generated on the Exchange Client Access server, as follows:

This problem occurs because the default Max Request Length setting for ActiveSync on the Exchange server is 10MB. When we send an attachment larger than 10MB, iPhone will keep trying to send it until the message leaves the device. To solve this problem, the recommended practice is to set the Maximum Request Length parameter in the web.config about ActiveSync on the CAS server to be greater than 15MB. In general, higher than 50MB is not recommended, and the normal setting is 15MB to 20MB. Because the mail is too large may affect the efficiency of mail transmission. Specific steps are as follows. Please refer to:

On Exchange CAS (customer access server), locate the ClientAccess\ Sync\ web.config file under the path where you installed Exchange. The default path is: C:\ Program Files\ Microsoft\ Exchange Server\ V14\ ClientAccess\ Sync. Open the web.config file and find

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