You don't need privileges to install modules. You would only need them if you wanted to install them for all users. Obligatory link: Yes, even you can use CPAN.
Regarding access to Exchange, you could use:
Ask the Exchange admin(s), or use a quick TCP connect port scan.
Alexander
In reply to Re^3: Connect to Microsoft Exchange
by afoken
in thread Connect to Microsoft Exchange
by libvenus
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