On 2012.09.10. 15:33, Wietse Venema wrote:

What about allowing spammers to change the spamfilter by
changing the MAIL FROM command?

        Wietse


It's already ip subnets and/or smtp-auth filtered(outgoing stmp), but if client gets infected, it is very unlikely, such spam-sender-robot will set right whitelisted-sender domain.
__
KSB

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