LALOT Dominique <dom.lalot@xxxxxxxxx> wrote: > . I've seen once entourage on macosx ignoring 5xx code from our smtp > server, and trying to upload a 50Mo file every minute. Outlook will try every second, under some conditions! Funny, I was thinking Outlook Express for this imap problem. I've seen it start a new imap login to see whether there's new mail in the inbox it already has open (this is horrible in U Wash imap, where the new session kills the older one). If these were evenly timed, like every 5 minutes, I would have said Outlook Express. But these are at irregular intervals, so I think it's something else. Joseph Brennan Lead Email Systems Engineer Columbia University Information Technology ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html