[Exim] SASL

In the exim docs it suggests that exim cannot do pam authentication
because it needs to be done by a process running as root. Is this
because it needs to be root to access /etc/shadow?

One way round this suggested in the docs is to use pwcheck from the
Cyrus pwcheck daemon. However when I downloaded it the (sasl) docs say

PLAIN uses the saslauthd (preferred and now standard), the
pwcheck daemon (obsolete), or an auxilliary property plugin (for
example, sasldb).

So if pwcheck is obsolete should I be going down this route. It is a
redhat 9 box running the latest version of exim with exiscan. I really
need to make smtp authentication work but seem to be stuck at every
turn.

/Ron

--
Ron McKeating
Senior IT Services Specialist
Internet Services and Software Solutions
Loughborough University
01509 222329