Previous 1 2 3 Next 34 Replies Latest reply: Mar 30, 2012 12:50 PM by stevewhitemd
atraurig Level 1 Level 1

After installing Lion, my exchange account won't connect in Mac Mail. I tried connecting through OWA and Entourage and they both worked fine. I'd really like to use Mac Mail instead of Entourage so I'm trying to figure the problem. Any ideas why exchange won't work in Mac Mail?


I've already reinstalled OS X Lion.


It gives me an error:

Screen Shot 2011-07-22 at 7.22.11 | 5.15.41 PM.png



MacBook Pro, Mac OS X (10.7)
  • Asatoran Level 4 Level 4

    You don't mention specifically if Mail connected to Exchange prior to you upgrading to Lion.  But assuming it did, have you tried deleting the accounts in Mail, then recreating them?


    If you did not have Mail connect to Exchange before, then realize that Mail only works with Exchange 2007 and later.  Entourage will work with earlier versions of Exchange so you should confirm that you're connecting to Exchange 2007 or 2010 first.

  • atraurig Level 1 Level 1

    Yes, exchange was working before I upgraded from Snow Leopard. We are running exchange 2007.


    I've also tried deleting accounts and recreating them. Nothing seems to be working.

  • Onchip Level 1 Level 1

    I am also getting the same problem, it is little frustrating as why apple didn't test before they release their major software release like Lion. My printer is not working since i installed Lion, i am planing to revert back to my older version until apple fix this mail and printer issues....

  • Asatoran Level 4 Level 4

    Onchip wrote:


    I am also getting the same problem, it is little frustrating as why apple didn't test before they release their major software release like Lion.

    It's running perfectly fine for me.  Mail and Outlook 2011.  On both a 2009 Mac Mini and a 2008 Macbook Pro.  I connect to Exchange 2007 & 2010 servers.  And by IMAP to an Exchange 2003 server, as well as IMAP to Yahoo, Hotmail and Gmail.  All through Mail and Outlook 2011.


    "Upgrading" existing installations always has the potential for more unexpected issues, so as much as possible I try to do a clean install.  (You can clean install Snow Leopard, then upgrade to Lion or Google on how to do a clean install of Lion.)  During my testing, I did upgrade my existing SL on both machines to test Exchange connectivity, as well as clean installs.  I did not have any issue with Mail.  I read many of the experiences of the other people testing Mail and while there were many small bugs, I do not recall anyone with complete disconnect from Exchange email.


    Did either of you check your hard drives for errors first?  Apple had recommended installing the 10.6.8 update prior to Lion.  Otherwise, a clean reinstall IMHO would have to highest probability of success.

  • whatever!!! Level 1 Level 1

    Same problem for me.  Deleted all old accounts and set up Exchange account from scratch - just won't allow me to take the account online.  Use this account from several machines, so know set up procedufre inside out and everything which should have been done has been done.  Sort it out Apple - this is a business account.

  • dirkjanb Level 1 Level 1

    i'm having the some problem, both 'mail' and outlook 2011 wont connect to my exchangen account now.

    Reinstalling won't help .....

  • ccsliinc Level 1 Level 1

    Same problem here.  Still have not been able to locate an answer to this problem.  both mail and outlook 2011 same as previous person

  • ccsliinc Level 1 Level 1

    Just spent the day fresh installing Lion.  Migrated my settings and still no dice.  There is something blocking this connection.

  • ccsliinc Level 1 Level 1

    Problem solved!


    Server sideissue, please ask your exchange administrator to perform the following actions.


    1, Open IIS Manager on yourExchange 2007/2010 Client Access Server

    2, Select "Default WebSite" then "EWS"

    3, Select"Authentication"

    4, Right click on "BasicAuthentication"

    5, Make sure its "Enable"


    Reboot Exchange Server



    And you’re ready to go

  • rodrigomarrafao Level 1 Level 1

    I use google exchange... not working too. On my iphone the same configuration works flawlessly. Am i missing something?

  • dirkjanb Level 1 Level 1

    I've got it working again. Here's what I did:

    1) removed outlook 2011 (not complete Office)

    2) reinstalled outlook 2011 (outlook did not open!)

    3) looked for office update on web, But did not install!)

    4) opened Word and used the update option within Word, here He found a critical update (1 week old)

    5) installed the update

    6) now outlook opened again and my exchange settings now worked great!!!


    It worked for me, might workshop for you!

    Good luck.

  • sseago Level 1 Level 1

    How do you connect Outlook 2011 or Mail to an Exchange 2003 server? I can't seem to make it work.

  • ccsliinc Level 1 Level 1

    Your exchange administrator has to change a setting that will allow 2003 outlook clients.  It is not enabled by default.

  • Radijoe Level 1 Level 1

    I have the same problem. My new MBA is sitting next to my Imac running 10.6.8. Deleted everything on both machines related to exchange and then added exchange setup on both. iMac works perfectly each time and MBA with Lion always shoes the same error - port 443...


    Our email admin has the settings described in this thread.


    I used migration assistant to migrate my system from the imac22 to the MBA, and am testing to see if I can use the MBA as the replacement before I wipe and sell the imac22.

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