[Exim] Authenticated smtp

If you want to use authenticated smtp and you want to use the plain or
login authenticators, what is the best way of using /etc/shadow. I
understand it is possible to create a group, put user exim in the group
and give the group rights over /etc/shadow. Are there any other better
ways of doing it ?

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