RE: POP vs IMAP vs MAPI - security through firewalls?

[Jan van Rensburg <jan.van.rensburg () epiuse com>]

hi,
ms exchange needs 3 ports, all tcp. port 135 (ms portmap equivalent), and 2
others: 1 for the directory service, and 1 for the information service
(data). the last 2 can be set to anything you want in the registry at: 
HKLM\System\CurrentControlSet\Services\MSExchangeDS\Parameters and
HKLM\System\CurrentControlSet\Services\MSExchangeIS\ParametersSystem

the 136-139 ports are not needed. 

i think the mapi vs pop/imap security is reference to the clear text over
the network that everything for pop/imap usually uses. ms exchange has some
light encryption between the server and users. i suspect pop/imap over ssl
might be even better.

--jan
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