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All of our mobile devices use Active Sync and are set not to download attachments. We see a lot of OWA traffic from our Back End servers to our Front End server and can only assume that the traffic is attachments that are being sent from the Back End server to the Front End server to fulfill requests for new messages from the mobile device.<br />
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Being that the devices do not download attachments unless it is done manually, is there a way to stop the attachment from being transmitted from the remote Back End to the Front End until the request to download the attachment is made?
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All of our mobile devices use Active Sync and are set not to download attachments. We see a lot of OWA traffic from our Back End servers to our Front End server and can only assume that the traffic is attachments that are being sent from the Back End server to the Front End server to fulfill requests for new messages from the mobile device.

Being that the devices do not download attachments unless it is done manually, is there a way to stop the attachment from being transmitted from the remote Back End to the Front End until the request to download the attachment is made?

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What is the flow of data from a PDA to the backend server? What is the flow of data when the PDA is synchronizing new email? What is the flow of data when an email with an attachment is sent from a PDA to multiple users in the same domain but possibly on a different mail server?
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What is the flow of data from a PDA to the backend server? What is the flow of data when the PDA is synchronizing new email? What is the flow of data when an email with an attachment is sent from a PDA to multiple users in the same domain but possibly on a different mail server?

Microsoft, Exchange, 2003, OMA and OWA data flow

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

IIS is Internet Information Services, the web server included with Windows Server operating systems. All current versions are built on a modular architecture; modules can be added or removed individually so that those required for specific functionality are installed. The full installation of IIS includes HTTP, security, content, compression, caching, logging and diagnostics.