Tickets :: Comment on [#5296] Unavailable mailboxes shown as empty

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Comment	> We are using Cyrus IMAP in a "murder" configuration. Occasionally, > one of the backend servers will go down while the frontend servers > remain up. The IMAP transaction looks like this: > > > > $ openssl s_client -connect mail:993 -quiet > > depth=1 /C=US/O=Equifax/OU=Equifax Secure Certificate Authority > > verify return:0 > > * OK cyrus-frontend-host Cyrus IMAP4 Murder v2.2.12 server ready > > a01 LOGIN testuser password > > a01 OK User logged in > > a02 SELECT INBOX > > a02 NO Server(s) unavailable to complete operation > > a03 LOGOUT > > * BYE LOGOUT received > > a03 OK Completed > > read:errno=0 > > > > So the login succeeds because authentication is done on the > front-end, but the INBOX is unavailable because it's on the down > backend. > > > > IMP should be able to catch the "server unavailable" message and pass > it back to the UI instead of showing an empty mailbox. Users > currently panic, thinking that their mailbox has been wiped, when in > reality their backend server is undergoing maintenance (or it's > broken, but their mail will be back when the server comes back up).
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