When you search for big amounts of entities, a SQL TimeOut exception can occour. To minimize the amount of data, you can specify additional filtering in the PowerSearch Configuration (This filter must be manually inserted into the XML of the PowerSearch Config).

We once had the problem that some emails with a long text in it were taking ages till they were send. We are using the email router to send and receive emails to our support team.

As we moved some months ago from normal exchange to BPOS my first suggestion was that it has to do with the connection between BPOS and the Emailrouter. ( RU 14)

In the event-viewer I recognized the following entry:

#61042 - An error occurred while the outgoing email message with the subject Re: urgent problem with DCP config PTM CRM00114110 CRM: 0000132293' for ExchangeOnline: http://[servername]/PTMEDVSystemeGmbH for delivery through https://autodiscover-red002.mail.emea.microsoftonline.com/ews/Exchange.asmx The request failed with HTTP status 413: request entity too large,
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)bei System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) bei Microsoft.Crm.Tools.Email.Providers.ExchangeServiceBinding.CreateItem(CreateItemType CreateItem1) bei Microsoft.Crm.Tools.Email.Providers.ExchangeOnlinePollingSendEmailProvider.SendMessage(MessageType mailMessage) bei Microsoft.Crm.Tools.Email.Providers.ExchangeOnlinePollingSendEmailProvider.ProcessMessageInternal(email emailMessage)

CTI does need the server component in a hosted environment as well, but you can launch the CTI Server setup from any Client, as long as you have a user with full access to CRM.

You need to select the hosted options on the Connection dialog.