This document describes how to see the message size based on bytes for messages processed through your CIsco Email Security Appliance (ESA).
Determine Large Messages or Message Size in the Mail Logs for the ESA
From the CLI, use grep to find the size of large messages that have processed through the ESA and have been written into the mail logs.
Message size is based on the message headers, the body of the message, and then any attachments associated to the mail message. All three components of the message will total up to comprise the total bytes of that mail message in the mail logs.
Here, we can see the first message returned in the list was sent through with total size of 29503682 bytes, or 28.1 megabytes.
Note: "-i" indicates the the search should be case insensitive.
Note: "." indicates how many characters the search should match. In the above examples, there are 6 periods in the first command, 7 periods in the second command and 8 periods in the third command. For our examples, we are using the matching "." for byte size.