Exchange under Mountain Lion

Agree, let's keep on topic. Exchange is a very important feature not only for users but also for Apple, since it is used extensively in the business community, a community which Apple would like to serve better.

To elaborate on the post I made above, I'm using Exchange on my mid-2010 iMac and my 2011 MacBook Air. As a test, I upgraded the OS in the Air from Lion to Mountain Lion yesterday. I had the same issue as everyone else.... Exchange didn't connect.

After reading several threads here, what worked for me was to go into Preferences for each of the Exchange-enabled accounts (e.g., Mail, Calendar, and Contacts). For each EXTERNAL SERVER, I added our OWA address (outlook.XXX.com), and checked the SSL checkbox (the SSL box is in the Advanced menu in Mail). I left the Internal server alone, using whatever the program set it to be. After changing the External server address, everything seems to be working OK and it appears to be sticking. I did this last night and this morning on a fresh rerestart of the Air, it appears OK.

My iMac is my master computer so I may not upgrade it to ML until I am sure this fix works, or Apple comes out with a fix.

Hope this helps folks.

Smitty,

First of all, if you read my post you would have seen that I have the problem as well both with wireless and hardwired. It has to do with whether you use a router or have a direct modem connection to the net. The problem may well be the same as it seems to have something to do with the way that exchange accounts autoconfigure under mountain lion when on a router (maybe an apple router). Even if the problem is different in some way, the posting is big enoug to accomodate two similar albeit possibly different problems. Until we know for sure what the cause of the problem is lets be a litte more open about what and whom may post. This is a public board not your private one.

Thanks Michael Paine, this "trio" of actions recommended by you seems to be working for me.

Hi!

Same problems here. I'll try to change the exchange server settings within the next 2 days. Seems to be a problem with autodiscover and the "Outlook anywhere"-Settings. I have to check with our admin though because I don't want to crash the system! ;-)

Still Apple should solve the problem and introduce a setting that allows the client user to change the settings individually and turn off these autosettings.

Cheers,

zarrsten

I wrote that too early: the problem has reappeared.

Had the same problem with Exchange everyone is having. Here is what fixed the problem for me:

1. Add the external mail server address (the one that keeps getting deleted every time you quit Apple Mail) in the "Account Information" area, "External Server" field.

2. Check "Use SSL" for the External Port by going to the "Advanced" in the Account area.

I have had no problems since.

What worked for me: 🙂

1. Delete the Exchange account in the Mail app preferences. It will not delete your exchange server info
2. Wait 10 minutes. If the account is accessed unsuccessfully too many times, it will lock you out and reset after 10 or 20 minutes. Close the Mail app
3. Go to system preferences and under internet and wireless, go to mail, contacts and calendars.
4. Set up a new account for Exchange. Allow keychain access if asked.
5. It should work and when you open the Mail app, the Exchange account will populate at least it did for me.

I downloaded ML two days ago and am having major Exchange issues as well. I hope Apple offers a fix soon. Is it possible to revert to Lion, or am I stuck with this until it's fixed?

The only thing that actually works is changing your hosts file as explained earlier in this thread.

All these other 'fixes' - even the ones I mentioned earlier - are useless as they do not 'stick' when you close and re-open Mail.

Look through this thread and you will see that this is the case. They work WHILE Mail is open, but once you close (quit) and then re-open, your settings are lost.

Any additional posts suggesting a fix without trying it after Mail has been quit and then re-opened are bogus. Please try this additional step first before posting here. Thanks.

The steps I tried have worked for me since last Friday - even after shutting down and restarting my iMac a few times. I must be lucky in that the configuration settings on the Exchange server (hosts file?) that I use are not over-writing my manual settings (SSL ticked and external server name manually entered).

The only "symptom" that I now have is that it seems to take much longer for sent Exchange mail to appear in my sent mailbox (maybe 30s instead of a few seconds).

Hi,

today I contacted Apple support. After an hour argue back and forth they finally confess, it is a serius Mail problem in ML. They promised me to send this directly to Apple engineers. Will hopefully get answer in 4 days:-). I will keep all of you posted.

This is also working for me! We'll see if it lasts but this has given me the longest-lasting fix so far. I have now received my full backlog of exchange email history and am sending and receiving emails to and from the exchange server with good speed. Thanks!

I have been working on this problem the entire weekend and none of the suggestions from this thread have worked for me long term. Every time I think I have a solution I get out of Mail and when I return mail is gone for some mailboxes and there for other mailboxes so nothing I do really corrects the underling problem.

I finally gave up and installed Microsofts Outlook 2011. The Outlook client is connecting to the same Exchange server that my Mountan Lion, Apple Mail, is having so much trouble with and is working fine.

The problems with Apple Mail on Mountain Lion have to be in the Apple Mail Account and what it is doing. I am still not sure if it is an App problem or if it is a simple problem with a plist but it is not repairable by anything I have tried or any of the suggestions in this thread.

We switched over to a new Exchage server this weekend and Mail is now working. Someone had mentioned that Mail is pulling Server settings from the Certificate. This is not true because we have not changed the cert. So it is pulling them from Exchange directly. We moved from a split domain (using .com and local) to a domain with same internal and external address and so now everything is working on this end.

I'm runing as well into these problems with ML and Exchange. Can anyone here confirm that the notes application also gets notes from exchange 2007 or will this only work with exchange 2010?

Best Regards,

Thomas