Hi again,
The problem just appeared again. I may have some additional information, though...
I'm using multiple email addresses and all emails are redirected to a single IMAP account that I'm opening in Outlook 2010. Any incoming email ( Inbox [iMAP Account] ) is submitted to a set of Outlook rules dispatching each email in a particular Outlook folder according to the topic and/or to the sender/destination address. If no rule applies, then the email is moved to the Inbox [Outlook] folder. This is the last rule that is (normally) being applied.
It seems that in the latter case, the email is not moved but copied one or multiple times. It is left in the Inbox [iMAP account] folder anyway but can be also duplicated in at least one of the target folders used by the rules mentioned above even if the corresponding rule doesn't apply.
This never happened before I installed ESET a few days ago.
After further testing, it seems that the installation of ESET NOD32 has changed the order in which rules are applied. Everything happens as if the last rule defined in Outlook's rule execution order was actually not the last rule executed. I have modified this rule in order to make sure that it stops any further rule processing and this seems to have solved the problem. A test email sent to a given account and written in such a way that no rule except the Move to Inbox [Outlook] rule can apply no longer triggers the problem although it systematically did before.
Let's see if this is enough to definitively cure this issue... Not sure because if my guess is correct, rules are no longer executed in the specified order and some rule may not be executed although they should.
Regards.
