Hi.

My organization is running Exchange 2010 w/SP1 and our AD is on Windows 2008 R2.

Majority of our users are using Outlook 2010, with quite a number on Office for Mac 2011.

We have recently purchased another company, setting-up a separate domain to support their needs.

We have setup a two-way trust between our existing domain and this new domain.

This new domain users make use of our Exchange for their email services, and to make this work, we used linked mailbox.

Everything is working fine, with the exception that users using Outlook for Mac 2011 always have issue downloading their emails right after their site has undergone some maintenance e.g. power shutdown.

After a few days, it will work without any issues.

We have checked on the replication between both ADs and confirmed that all is working fine.

What else could be the issue? I know that Office for Mac 2011 relies on EWS (Exchange Web Services) and we can't find anything wrong here as well.

Appreciate if someone could point us in areas that we could look at to solve this issue from recurring.

Regards,

Adrian