Open firewall for Exchange 2010 on SBS 2011


  • I would like to open my firewall so that Outlook users can access their email over the internet. OWA works fine but Outlook wont connect from the "outside"?

    The firewall is shorewall and I have a DNAT rule to the exchange server for the following ports 80,135,443,3389

    Is there any settings on exchange server itself that I need to change so that there is WAN access.

    Really stupid side question when Outlook connects to Exchange, does it use MAPI for all it's connections? And just port 135?

    Monday, May 02, 2011 9:56 AM


All replies