--with-auth only for group memberships?

[Kevin P. Fleming]

I've just reworked my Cyrus IMAP installation, and I'm beginning to get 
the impression that --with-auth (which defaults to "unix") is only for 
group memberships, and really has no other effect. It certainly doesn't 
seem to affect SASL in any way, which is what actually handles 
authentication.

Since I have "unix_group_enable: 0" in my imapd.conf file, does that 
mean that it no longer matters what I specify for --with-auth? If so, 
the documentation could use an update to make that abundantly clear, and 
ideally the option could be renamed so people don't think it has 
anything to do with actually authenticating users :-)
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