If you are running Outlook on an Exchange email server the message size limit
is controlled by the connectors on the mail servers. If you just wanted to
receive large emails you need to change the Recieve Connector maximum message
size; if you want to also reply with those large attachments you will also
need to increase the maximum message size for the Send Connectors. By
default Outlook uses the maximum system send and receive message size limits;
but, it can also set those limits lower so check for that as well. That is
under the Mail Flow Setting tab of the mailbox properties, Message Size
Restrictions.

"Shane" wrote:

"...message is larger than the current system limit..." Can i change the
limit to receive larger emails? I have construction documents/plans that
require more space. It is awkward to ask a client to split it up and is
burdensome to them.