david.sinning

Q: Sierra Mail does not sync with my Exchange server anymore.

Dear community.

 

After upgrading to macOS Sierra Mail doesn't sync with the Exchange server anymore, so I can't check my work emails. I have deleted and re-installed the exchange account, which didn't help with the problem.

 

At the same time, my iOS devices (iOS 10) keep syncing without any problems.

 

Anybody experiencing the same problem? Any solution?

 

Thanks, David

Posted on Sep 22, 2016 12:02 PM

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Q: Sierra Mail does not sync with my Exchange server anymore.

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  • by kabobob,

    kabobob kabobob Sep 26, 2016 12:49 PM in response to david.sinning
    Level 1 (4 points)
    Mac OS X
    Sep 26, 2016 12:49 PM in response to david.sinning

    Same here. In order to receive emails I have to 'Take Exchange Offline' and then online again. My iPhone on iOS 10 continues to sync just fine.

  • by gr7,

    gr7 gr7 Sep 26, 2016 2:38 PM in response to david.sinning
    Level 1 (14 points)
    Mac OS X
    Sep 26, 2016 2:38 PM in response to david.sinning

    I'm having exactly the same problem. Exchange works fine with ios but nothing in Sierra Mail.

  • by cleusmeusel,

    cleusmeusel cleusmeusel Sep 27, 2016 6:18 AM in response to ptouron
    Level 1 (13 points)
    Mac OS X
    Sep 27, 2016 6:18 AM in response to ptouron

    Hello ptouron,

     

    the message is very unspecific and just telling me that there is an error with my Mailbox. It occurs after each attempt to connect from my mac and magically disappears after half an hour.

  • by Csound1,

    Csound1 Csound1 Sep 27, 2016 6:21 AM in response to Jet787
    Level 9 (50,876 points)
    Desktops
    Sep 27, 2016 6:21 AM in response to Jet787

    Jet787 wrote:

     

    I don't know if this can help but I have the same problem with yahoo and gmail, i.e. no sync done on actions performed on the Mac with macOS Sierra, while everything is synced if actions are done on iOS devices...

    Yahoo and Gmail are not Exchange accounts, you have a different issue.

  • by cleusmeusel,

    cleusmeusel cleusmeusel Sep 27, 2016 6:24 AM in response to cyrilfromlasserre
    Level 1 (13 points)
    Mac OS X
    Sep 27, 2016 6:24 AM in response to cyrilfromlasserre

    Hi Cyril,

     

    thank you for your description of the problem. I think the problem has to do something with ports and SSL as I do not have any problems when I add the account but after successfully adding and I think that also means successfully authenticating all my Apps won't connect to the Exchange Server.

     

    Regards,

     

    Clemens

  • by ptouron,

    ptouron ptouron Sep 27, 2016 6:35 AM in response to cyrilfromlasserre
    Level 1 (4 points)
    Mac OS X
    Sep 27, 2016 6:35 AM in response to cyrilfromlasserre

    Hi,

     

    OWA and EWS connection (via mail) are not related. The lockdown of your account depends of the security policy used on your domain (I assume your mailbox is hosted on a server managed by your IT department).

     

    Obviously, if your account is locked, you cannot access your mailbox (online mode), either via OWA or EWS.

     

    Mailbox account configured to use Exchange in mail app uses EWS; afaik mail doesn't let you change auth mode, but I really don't think that's cause of the issue.

  • by ptouron,

    ptouron ptouron Sep 27, 2016 6:46 AM in response to cleusmeusel
    Level 1 (4 points)
    Mac OS X
    Sep 27, 2016 6:46 AM in response to cleusmeusel

    Looks like you try to sync some corrupted items via mail, that put your mailbox in quarantine state. So, not a connection issue, but rather a mailbox issue (just a supposition).

     

    Where is your mailbox hosted (on premise, O365 or other cloud provider) ?

  • by ptouron,

    ptouron ptouron Sep 27, 2016 6:58 AM in response to david.sinning
    Level 1 (4 points)
    Mac OS X
    Sep 27, 2016 6:58 AM in response to david.sinning

    To complete my previous comment, I confirm that sync goes well server-side (no connection issue whatsoever), but no new item are pulled in mail.

    But certain operation works, like putting a mail unread or flag some items (seen in real time on Outlook or OWA). Also, calendar events are well synchronized too. The only thing that's broken is item refresh in folders (same issue if I move a mail in another folder).

     

    It's a mail app issue for sure (for me anyway, some of you may have others issues).

     

    Edit : Some background :

    - 2 Exchange 2013/2016 account cloud hosted (OVH, O365) -> No issue at all

    - 1 Exchange 2010 account hosted on premise -> Said issue (only after Sierra upgrade). So, like someone said in this thread, dev team certainly changes something in the connection handling on mail app that may break some operations on legacy Exchange version. Just a possibility.

  • by cyrilfromlasserre,

    cyrilfromlasserre cyrilfromlasserre Sep 27, 2016 11:50 AM in response to cleusmeusel
    Level 1 (4 points)
    Mac OS X
    Sep 27, 2016 11:50 AM in response to cleusmeusel

    Well it seems different for me. In my case, I can't add the account. It saying that it is unable to authenticate the account.

    I have two other mac at home, one running Yosemite and the other El Capitan. I can't get my exchange account to work with any of my mac.

    I asked my IT to take a look, and he successfully configure another exchange account on Sierra (on the very same laptop where I cannot configure my account).

    So it seems that it has nothing to do with my mac(s), and I probably have a corrupted exchange account.

    BTW, this account is working perfectly on Windows ...

  • by KiltedTim,

    KiltedTim KiltedTim Sep 27, 2016 11:52 AM in response to ptouron
    Level 9 (56,005 points)
    Mac OS X
    Sep 27, 2016 11:52 AM in response to ptouron

    ptouron wrote:

     

    - 1 Exchange 2010 account hosted on premise -> Said issue (only after Sierra upgrade). So, like someone said in this thread, dev team certainly changes something in the connection handling on mail app that may break some operations on legacy Exchange version. Just a possibility.

    Is Outlook Anywhere enabled on the Exchange 2010 server?

  • by ptouron,

    ptouron ptouron Sep 27, 2016 11:59 AM in response to KiltedTim
    Level 1 (4 points)
    Mac OS X
    Sep 27, 2016 11:59 AM in response to KiltedTim

    No. It really is an EWS access.

    We had issues with NTLM auth on reverse proxies for Outlook Anywhere access, so it is disabled.

  • by bergs10,

    bergs10 bergs10 Sep 27, 2016 12:59 PM in response to david.sinning
    Level 1 (12 points)
    Desktops
    Sep 27, 2016 12:59 PM in response to david.sinning

    Hi,

     

    I have exactly the same problem on my iMac, I did re-install the account several times with no success. At the same time my Macbook air works perfectly. I compared both mac and found no differences. Have no idea what to do.

     

    andrej

  • by Mynet,Helpful

    Mynet Mynet Sep 29, 2016 8:24 AM in response to david.sinning
    Level 1 (14 points)
    Sep 29, 2016 8:24 AM in response to david.sinning

    I found a solution that fixes my Exchange Server connection in macOS Sierra mail. Actually, this solution was mentioned earlier in this thread by “david.sinning” who posted a link to a workaround. I just could not understand how to implement the solution until now.

     

    My Solution

     

    First you need to know what the Exchange Server name and path is for both the internal and external connections. I was able to locate this information from another Mac that was still running El Capitan as follows:

     

    Mail -> Preferences -> Accounts -> My Exchange Account -> Account information

     

    Internal Server: webmail.mycompany.com

    External Server: oa.mycompany.com

     

    Mail -> Preferences -> Accounts -> My Exchange Account -> Advanced

     

    Internal Server Path: /EWS/Exchange.asmx

    External Server Path: /EWS/Exchange.asmx

     

    Return to your macOS Sierra Mac mail application and delete the non-functioning Exchange Server account.

     

    Add a new Exchange Server account as follows:

     

    Mail -> Preferences -> Accounts -> select plus button “+”

     

    For account provider select “Exchange” and click “Continue”

     

    This gives you a box with the following fields:

     

    Name: Jim

    Email Address: Jim

    Password: Jim

     

    Just put something like “Jim” into each field and click “Sign In”

     

    You get a box that allows you to input most of your settings manually:

     

    Email Address: jim.cook@mycompany.com

    User Name: jcook

    Password: ******

    Internal URL: https://webmail.mycompany.com/EWS/Exchange.asmx

    External URL: https://oa.mycompany.com/EWS/Exchange.asmx

     

    Click “Sign In”

     

    The above should have successfully created me a functioning Exchange Server account, but it did not!

     

    The twist for me in macOS Sierra mail was I needed to use the External URL information for both the Internal and External URL fields.

     

    Email Address: jim.cook@mycompany.com

    User Name: jcook

    Password: ******

    Internal URL: https://oa.mycompany.com/EWS/Exchange.asmx

    External URL: https://oa.mycompany.com/EWS/Exchange.asmx

     

    This is what actually worked in my case.

     

    One big note of caution. I found that you cannot edit and correct the settings of an existing Exchange Server account. You must start over from scratch. Every time I tried to correct the settings of an existing Exchange Server account it would only briefly work. macOS Sierra would then quickly query Exchange Server and change the account setup causing it to fail.

     

    This whole issue is probably being caused by new changes in macOS Sierra along with my company not keeping their Exchange Server up to date.

  • by aflann,

    aflann aflann Sep 29, 2016 11:22 AM in response to david.sinning
    Level 1 (4 points)
    Sep 29, 2016 11:22 AM in response to david.sinning

    I am having the exact same problem.  I contacted Apple but they said it was a problem with the Exchange server.  After contacting Microsoft, they informed me that it was a problem with Apple's new operating system. 

     

    I even tried the to delete the account and try the suggestions from above but now it indicates that it cannot verify my account name and password.  Please help.

  • by cyrilfromlasserre,

    cyrilfromlasserre cyrilfromlasserre Sep 29, 2016 11:31 AM in response to aflann
    Level 1 (4 points)
    Mac OS X
    Sep 29, 2016 11:31 AM in response to aflann

    Well, in my case, it's not sierra, it's really my account. Some accounts are working, some not, on the same exchange server. My IT is currently investigating to see if there is any differences between these accounts in AD or in Exchange Server

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