When an email is sent that is bigger than the maximum file size specified in the Email Security.Cloud portal, the email will be blocked by Symantec. By default, the sender, recipient and the anti-malware administrator will receive a notification about an email exceeding the size limit.
Email Size Limit
Emails are blocked due to email size limit configuration in the Email Security.Cloud Portal.
To change the maximum email size limit follow the steps below on your Email Security.Cloud portal:
The email size that the ClientNet portal uses is based on the final size of the email, post expansion. See INFO3975 for more details.