IMAP proxyauth (proxyauth) Plugin

Note

The imap-proxyauth plugin is not distributed as part of the base Dovecot Pro package. This plugin requires separate licensing to use. Contact Open-Xchange Support for further information.

Implements Sun iPlanet/Oracle CMS like PROXYAUTH on the IMAP server side.

Dovecot internally just converts the LOGIN + PROXYAUTH command pair to a standard SASL PLAIN authentication before it does anything. This means that if the proxyauth plugin is loaded, Dovecot assumes that IMAP clients always do LOGIN + PROXYAUTH pair. If no PROXYAUTH command is given, the IMAP connection will start giving errors when client attempts to use commands such as LIST or SELECT.

Example Configuration

protocol imap {
  login_plugins = proxyauth
}

Example IMAP Session

C: a LOGIN master-user master-pass
S: a OK Login processed, waiting for proxyauth.
C: b PROXYAUTH real-user
S: b OK Logged in as real-user