Message attempted to kill mailscanner

[Arjan Melein]

is there any way to set the limit of dying mailscanner childs to  + 2  before it triggers the 'attempted to kill' detection ?
I keep getting the 'message attempted to kill mailscanner' error more and more frequently because greylisting is keeping out so much spam on my low volume system that every now and then a valid e-mail triggers the 'dying of old age' for every thread and gets marked as an attempt to kill MS.

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Arjan