MAIL with Protected file got quarantined and not delivered to the recipient
While some one send a mail with protected File as an attachment, Sophos will not show any logs in the e-mail Logs Troubleshooting and it quarantine mails even-if sender address/mail domain is added in the white-list.
Sophos will send bounced back mail to the sender regarding nondelivery of the mail for those recipients who are in CC that sopho could not able to send the mail with recipient error .
As of now solution is send the protected file as zip format in the attachment.
AdminRich Baldry (Senior Product Manager, Network Security Group, Sophos Features & Ideas Laboratory) commented
What would you like to happen in this case?