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Slow connection with outlook anywhere on Exchange 2007 RRS feed

  • Question

  • Hi to all.

    I've a problem with Outlook clients configured to use Outlook anywhere.

    It is necessary to make sure that specific Outlook clients use internet connection to connect to the Exchange server even when they are on LAN internally.

    To do this, i configured some test clients with the parameters "on fast networks use http first..." and "on slow networks use http first..." checked.

    The address of the proxy server used for the configuration point to a public IP.

    Everything works, but during tests i notice that sometimes clients connection is made on TCP/IP instead HTTPS and they not use internet connection but internal LAN.

    I'm not sure how "on fast/slow networs use http first...." parameters work. With these 2 options checked is not guaranteed that the client will use internet connection only.

    I know that Outlook defines a fast connection as a connection that is faster than 128 kbps.

    But how Outlook decides to use TCP/IP connection instead HTTPS with both parameters checked?

    Thanks for help!

    Bye

    Lore

     

    Thursday, January 10, 2013 3:00 PM

Answers

  • Hi,

    Sorry, it's my mistake, it not only relate DNS, also Autodiscover.

    If the Outlook client from internal, it will connect to exchange server via tcp/ip first and looking for scp to find autodiscover. 

    Please understand how autodiscover works.

    Overview of the Autodiscover Service:

    http://technet.microsoft.com/en-us/library/bb124251(v=exchg.80).aspx




    Wendy Liu
    TechNet Community Support



    • Edited by wendy_liu Thursday, January 24, 2013 2:49 AM
    • Proposed as answer by wendy_liu Thursday, January 24, 2013 2:50 AM
    • Marked as answer by wendy_liu Thursday, January 31, 2013 6:33 AM
    Sunday, January 20, 2013 4:35 PM

All replies

  • Hi Lore,

    Sorry response you so late.

    Do you want outlook from internal to connect exchange server via Https?

    You can achieve it via DNS, Make the outlook client resolve exchange server from external DNS rahter than internal DNS.


    Wendy Liu
    TechNet Community Support

    Monday, January 14, 2013 2:35 AM
  • Hi Wendy,

    thanks for your reply.

    yes i want that clients from internal connect to Exchange server via https only. To do this, i configured my DNS to point to the proxy address as a public external IP.

    But i notice that some clients continue to use TCP/IP connection instead HTTPS, so my question is: how Outlook decides to use TCP/IP connection instead HTTPS with both parameters to force HTTPS checked? What is the rule? I found many articles that explain how to configure Outlook Anywhere, but nothing that explain how Outlook works, if it's possible to change some parameters and so on....   

    Monday, January 14, 2013 9:49 AM
  • Hi,

    Sorry, it's my mistake, it not only relate DNS, also Autodiscover.

    If the Outlook client from internal, it will connect to exchange server via tcp/ip first and looking for scp to find autodiscover. 

    Please understand how autodiscover works.

    Overview of the Autodiscover Service:

    http://technet.microsoft.com/en-us/library/bb124251(v=exchg.80).aspx




    Wendy Liu
    TechNet Community Support



    • Edited by wendy_liu Thursday, January 24, 2013 2:49 AM
    • Proposed as answer by wendy_liu Thursday, January 24, 2013 2:50 AM
    • Marked as answer by wendy_liu Thursday, January 31, 2013 6:33 AM
    Sunday, January 20, 2013 4:35 PM