OK I have “temporarily” solved the problem by:

  1. changing SMTPListen parameter to
    SMTPListen= (nothing)

  2. putting SMTP port in OE back to 25

  3. but to get the inbound scanned, I have to leave the 111/110 “switch-a-roo” like I posted in the previous message.

So it seems that Avast4 has now somehow hooked itself into the outgoing message handling, but still needs a re-direction on the inbound side.

???

JGS