Bron Gondwana <brong <at> fastmail.fm> writes: [...] > > Why does the auth fail on the backend server? It never should. If it does > that means you've screwed up pretty badly. You can give the failure from > nginx by just passing an Auth-Status header. > It fails on the backend server when the password that went in in the first place is wrong. I think nginx is at fault here since it considers the AUTHENTICATIONFAILED response from the (dovecot) IMAP server as an invalid response. 2010/03/22 13:36:27 [info] 19575#0: *2 client <IP1> connected to 0.0.0.0:143 2010/03/22 13:36:34 [error] 19575#0: *1 upstream sent invalid response: "NO [AUTHENTICATIONFAILED] Authentication failed."while reading response from upstream, client: 127.0.0.1, server: 0.0.0.0:143, login: "email@xxxxxxxxxx", upstream: yy.yy.yy.yy:143 (telnet session: * OK IMAP4 ready a login email@xxxxxxxxxx wrongpassword * BAD internal server error Connection closed by foreign host. ) Email clients such as thunderbird 3 or opera's M2 have trouble making sense of such behaviour by nginx and don't even attempt to pop up the authentication dialog box again. -Naresh. ---- 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