Why are there no notifications sent to either the recipient or the sender when a message that contains a prohibited attachment is deleted?
One of the main reasons that these extensions are being blocked is because they are commonly used by viruses to infect other machines via email. Another trick that viruses use is to forge the From: email address so that, if the recipient can not be delivered to, it still has a chance to be bounced back to the forged sender address. The Enterprise Gateways currently drop about 10,000 messages a day that contain prohibited extensions. Of those messages, 95% or more are viruses. So, if we were to enable notifications to the recipient or the sender, we risk the chance of notifying the incorrect sender in the case of forged From: addresses or annoying the recipient who may be getting bombarded with these types of messages.
Related Questions
- What should I do if the recipient of a message I sent (or appear to have sent) contacts me to say the message has been modified because of a virus or potentially malicious content?
- Why are there no notifications sent to either the recipient or the sender when a message that contains a prohibited attachment is deleted?
- Why notifications are not sent when the message contained both blocked and infected attachments?
