One of my users sent a file to a colleague and then wanted to cancel the message because the file attached was incorrect. How do you cancel the link to the file or is there a way to manually expire the link and delete the file off the server?
Secure Message: User can delete files from a Secure message he sent, by clicking "Delete attachments" option under the "Action" column in the "Compose Message > Sent" box. If sysadmins allowed users to delete whole Secure message ("Admin > Configuration > Settings > Allow users to delete messages") then users will see also the option "Delete message" in "Compose Message > Sent > Action". How to delete FileLink: "FileLinks > Existing FileLinks (tab) > Delete"