Before starting to work on your Pine configuration, you must make sure that the
Exchange Server is configured correctly. This is where your SysAdmin comes in to
play. You need to make sure the IMAP, SMTP, and LDAP services are all running.
These services could potentially be running on separate servers, so you need to
consult your SysAdmin.
On Exchange Server 5.5, IMAP and LDAP are installed and running in the default
installation. SMTP has to be installed separately, and comes in an add-on package
called Microsoft Exchange Connector, specifically for sending mail on the
Internet.
NOTE: You can manually check to see if these services are running by telneting
to their respective ports. (ie. IMAP:143, SMTP:25, and LDAP:389)