We recently received some disk image files via email with a .img extension. I see no reason we would ever need this so added a deny to the filename rules to block .img files.
Now I have users that are getting files blocked when sending outbound mails with .png files included.
it looks like EFA/Mailscanner is converting the .png files to .img files and blocking them. On checking the orignal messages they seem to contain embedded .png images and no .img files.
Could anybody advise on why this is happening or how to create the rule to allow image type .img files but block disk image .img files
Questions and answers about how to do stuff
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