On Thu, 3 Jun 2021, Henrik K wrote:

On Thu, Jun 03, 2021 at 09:32:28AM +0200, Matus UHLAR - fantomas wrote:
On 03.06.21 09:23, Henrik K wrote:
That's just outdated information.  It's fine to scan even 20MB+ messages, it
just requires some memory.

and CPU and time...

Those are affected very little by message size.  And all that is pretty much
negated by large messages being uncommon.

Be that as it may, the OP wanted to do DLP scanning of messages containing PPTx,XLSx, etc, and it's uncommon to see a small PPTx file, large is more common w/ such media.

Also, spamassassin does not have a native built-in component for parsing such media attachments, it would need to be some kind of add-in (EG the "fuzzy ocr" plugin that was the rage a while ago). As such it adds an additional complication that needs to be integrated/ managed/updated etc.

Probably better to use a whole different tool that comes with that kind of capability built-in (EG ClamAV).


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Dave Funk                               University of Iowa
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