I am also having this issue with Avast 4.8 server on my SBS2008/Exchange2007 server box. I suspect the emails are truely infected (they contain suspisous .exe attachments) and I am glad Avast! is blocking them.
Is there a way to set the Avast exchange scanner to auto detele these emails without displaying the Virus Found alert window and halting the POP connector until a net admin chooses an Avast action: Delete / Move to chest ?
I have tried to stop the Exchange scanning provider and the alert persists. Is this alert triggered by the standard shield or network shield?
See my post made a few minutes ago. It seems like a lot of us are being hit. Do you logs also say “Function setifaceUpdatePackages() has failed. Return code is 0x20000004, dwRes is 20000004”?