Hi, thanks for your answer.
I use Outlook 2003 italian version.
I can’t understand why, using Avast as a “bridge” to IMAP servers, big files downloads make the session prematurely end…
I experienced this kind of problem with different versions of MDaemon, Avast Home and OS (but I haven’t got the occasion to test it with different Outlook versions).
Any info is welcome.

Stefania