Re: Blocking Outlook External POP/SMTP

[Pierre Jaury <pierre () jaury eu>]

Le jeudi 11 mars 2010 à 16:40 -0500, Hart, Lee Anne a écrit :
> Hello,
>
> I'm looking for information on preventing/prohibiting users from
utilizing
> Outlook (at work) to retrieve their personal email from Gmail, AOL,
Yahoo,
> Comcast, Verizon, etc.
>
> Looking for the following:
>
> * Reasons why users should not be allowed to use Outlook on their work
> computers to retrieve their personal email.

Reasons not to be allowed to use one's own mail client (Outlook, ...) ?
None. The only one you could imagine is to filter mail traffic and
attachements easier through your web proxy/av.

> * Tools/techniques to block this type of traffic. It seems the most
common
> ports are 110, 465, 587, 993, and 995. Are there others? 

Smtp : 25/tcp

> Any reference are much appreciated. 
>
> Thank you!
> Lee Anne

-- 
Pierre Jaury <pierre () jaury eu>

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