Hello,
We scan all outgoing mail as we absolutely don't want to send out any
virusses. To accomplish this, we have a two-stage (separate) Postfix
setup, connected via a content_filter for Amavis/ClamAV:
Postfix (incoming stage) --> Amavis/ClamAV --> Postfix (sending stage)
However, during the last days some virusses seemed to slip through (we
were trapped by an external party). What I can think of is the
possibility that a mail is scanned and found to be clean is going
to the second Postfix and sits there in the queue. Suppose it cannot be
delivered immediately.
As the queue lifetime is in the order of days, it can take a while
before the message is delivered. During that time the ClamAV database
could be updated to recognize this message as a virus. However, it won't
get scanned again as it is already in the outgoing queue. And we're
sending the virus mail.
My question, is it possible to requeue a message to the first stage (the
incoming) to scan the mail again? I would like to run this process
whenever there's an update of the ClamAV database.
The command 'postsuper -r <ID>' requeues it to the second stage Postfix,
so that's no solution.
Regards, Willy Janssen, University of Nijmegen, The Netherlands
