Here in this article we will solve the issue when user is unable to report message to sophos phish threat product and user is getting error asking him to send as attachment.
Here is the screenshot of the error
If the reporting email size is greater than 1MB user cannot report email in normal way, he needs to forward it as an attachment.
Because outlook add in’s have hard coded size and in case if the user email is crossing that limit, feature it won’t work.
This size limit, will be applicable to all the add in not just phish threat add in.
Hope this article helps you.