Cyrus IMAP 'CAPABILITIES' and 'AUTH=PLAIN'

[Marty Lee]

> 
> I would guess you are missing libsasl2 modules for authentication, which
> your OS probably has packaged in a separate package. You can use
> pluginviewer/saslpluginviewer to view existing plugins. 

Awesome - was looking in entirely the wrong location (assumed it was a
Cyrus thing) and never even contemplated it might be a SASL thing;
especially as users could authenticate against it, even without the
CAPABILITY being shown.

Accounts now syncing, so hopefully we can get this system out of service
by tomorrow…

Thanks again…

marty