External sender's attachment is stripped when sending to Email Security.cloud customers

Products

• Email Security.cloud

Issue/Introduction

This article describes a scenario when an external sender's attachment is stripped when sending to Email Security.cloud customers.

Environment

Email Security.cloud

Cause

Email Security.cloud is not designed to strip an attachment while delivering a successful email to the intended recipient. There might be other reasons such as:

1 - The sender might be using a 3rd party Email security service like Mimecast or a different vendor which provides the possibility through content policy to strip an attachement while allowing emails to the intended recipient. 

2 - The attachment might have been stripped before sending the email due to local policies of the sender. 

 

Resolution

The sender should contact their email server Administrator and validate both steps ( See the cause tab) in order to confirm the reasons of the attachment stripping before we investigate the Issue from the Email Security.cloud.