On Friday 30 July 2004 16:04, Steve Wakelin wrote: > Easiest way is to setup your IMAP server on a different port other than 143 > and then configure Thunderbird to use that port. Disable access to 143. My own thoughts revolved around finding some combination of SSL options / authentication mechanisms that Thunderbird supports, which Outlook does not, thereby disabling Outlook from accessing the server.. Anyway, this is wildly off-topic - sorry :) gdh