Exchange under Mountain Lion

This is DNS and public/private IP addresses.

your company DNS is telling the world that remote.company.com is where your email server is located. Internally your company DNS is telling the internal network that the mail server is located at mail.company.com or remote.company.com. What you refer to 1.2.3.4 is a public IP address the world can see, but 5.6.7.8 is a private IP address that only your network can see (most likely 5.6.7.8 is something like 192.168.x.x or 10.5.x.x).

This Mountain Lion issue is changing the mail setting to the internal server name (mail.), even if you put in the public name (remote.). Since mail. is not publicly published via DNS you can never connect when outside the network, Mountain Lion shoud not be making this change. If you put in remote. in the setting, it should stay as remote. and not be changed everytime you connect to the server.

/etc/hosts file work-around has seemed to resolve my issues for the time being. Didn't even think to use that redirect trick! Good deal for the person that figured that work-around out. It's still not a fix, but it's good enough for government work.

Its clear to me that there are actually several major bugs with Mail.app.

Modifying /etc/hosts will only fix the problem with loadbalanced exchange servers as you are bypassing the dns resolution and therefore directing all your requests to the same server (ie unbalancing the load)

There are other issues with Mail.app like empty mailboxes & deadlocks when retrieving mail. These will not be fixed by modifying /etc/hosts and requires Apple to provide a fix.

Regards,

Mark

Same problem here. I have been trying to find a way out since hours now. Already spent hours for the last couple of days and I cannot take it anymore. And I don't prefer to edit the hosts file.

I tried adding the Mail account through Contacts and it worked perfectly fine. When I closed and restarted Mail, the .local extension in Internal and External Server came back. Before I added Mail, Contacts also worked just perfect. Anyways, this is a serious bug that Apple needs to fix. For now, I am back on Outlook. Cannot believe Apple Quality let through this bug or whatever it is called.

Any response from Apple to anyone as to resolution timeframes for this issue?

Dear,

Everything has been said before, but since nobody listens we have to keep going back and beginning all over again.

Mountain Lion is broken!!!

Apple knows that its up to them to come up with a solution.

This has been teh last time that i rush in to a software update from Apple.

Peter

Also having issues with Exchange and Mountain Lion. Mail doesn't update all the folders which means I can't see all of my emails. Notes crashes every single time I try to start it if I want it to sync with my Exchange notes. Contacts, Reminders and Calendar seem to work fine, but they are least important to my workflow! I also continually get errors whenever I try to move emails from my inbox to another folder on the Exchange server and if I use Outlook to move emails around, Mail crashes every single time on start up until I completely remove the account from the System Preferences and set it up again. It's very frustrating! A fix would be wonderful!

I never really had any problems in either Snow Leopard or Lion....

For those of you that are crippled and can't make Mail work have you considered rolling back to Lion until the fix is available? I personally have not done it since my Mail w/exchange is working but it is my understanding that you download Lion and then just reinstall it over the top of ML. Atleast one of you have said your company is loosing money due to this bug so it seems it might make since to take one of your BROKEN machines and try this process and get your company back online.

I've certainly considered it, but I haven't because it's more of a hassle than it's worth. Even though I cringe at the very thought, it's enough for me to just use Outlook until Apple releases a fix for it... In my case, anyway, it's more of an extremely inconvenient annoyance than anything else.

In Mail is a option to response to mail:

Ereyone needs to do this, so Apple knows it needs to be fix in short notice.

I also have send a mail to Tim Cook. Once in a while he awnsers to this kind of emails.

I just sent off my letter tot he chief. I said I would never do that because it probably gets filed into the trash can but since Apple tech support is even acknowledging the issue or participating in these forums, I felt it was my duty to go straight to the top of the chain of command.

If you do email Tim, please remember to be concise and give good examples such as links to this thread and the many other ones on these forums. If we just say "it doesn't work, fix it" we won't get our voices heard.

After 3 days of trying everything on this forum - the hosts file trick fixed it for me - thanks to everyone who has contributed and a big thanks to Ondray as my wife's new MBP Retina now does what she wanted - to sent emails via our company exchange server and I can use my Mac Pro using Mountain Lion - what a big mistake from Apple - not what we pay the Apple Premium for - you would have thought someone would have spotted this in testing - anyone got Tim Cooks email address?

ML does an "update" to the Mail database when it first runs so I suspect the database will not be readable with Lion. There are likely to be other hassles reverting to Lion. The key message from this thread is do not install Mountain Lion until Apple fixes the problem with Mail and Exchange.

BTW - I use Mail Steward to keep an archive of my email database. It turns out this is quite useful since reading/searching the archive does not involve Mail or Exchange.

The /etc/hosts completely works. I had to use the IP address of my external server to replace the internal one. So far, so good.

i deleted all 3 excahange mail accounts

configured 1 account to exchange 2010 and this seems to keep all mails now

no folders or mails dissepear "@this moment" cross my fingers

never worked longer than 1day after mails or folders dissepear

keep it like that for a few days to test

My config is normaly 2account on a exchange 2010(Private) and 1account to exchange 2007(work)