Email antivirus howto
Filtering of viruses in E-mail When and how does the filter work? The C&CZ mailservers, running sendmail, invoke MIMEDefang for each mail they receive, to scan for a virus and filter for spam. This means that the virus- and spamfilter works for all mail these servers process, whether incoming, outgoing or forwarded. If a mail contains an attachment with dangerous content, this mail is put into quarantine. The mail without the dangerous attachment, but with an attachment that explains what has happened, is forwarded to the addressee....