Hi All,
We have an internal exchange 2013 server and a Sophos SG310 cluster (9.354-4)
We are trying to prevent outbound emailing of call recordings.
I tried the Antivirus/MIME type filter with Audio selected, but this only seemed to affect inbound emails.
I suspect I must need to use Data Protection/Custom Rules?
If so can someone please provide an example custom expression
Help appreciated
Cheers - Ro
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