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How virus scanning works?

Posted: 13 May 2008, 08:10
by BurakUeda
Say I sent a 40MB attachment, and MSFE is set to scan both incoming and outgoing attachments.

Will mailscanner/clamav scan the file as it downloads it, or downloads the whole file first and scan?

Posted: 16 May 2008, 08:15
by Sarah
I believe it will download the entire attachment into a temporary file and then scan it. As I understand it, virus scanners can only scan whole files.