<div>
<div class="content wysiwyg-content">
we have exchange 2010 installed in DAG and 4 CAS servers.<br />
<br />
we have proof point gateway which filters our email<br />
<br />
emails from Some domains &nbsp;are coming as blank means no content in these emails are not coming through<br />
<br />
is there any thing with gateway?
</div>
</div>


we have exchange 2010 installed in DAG and 4 CAS servers.

we have proof point gateway which filters our email

emails from Some domains  are coming as blank means no content in these emails are not coming through

is there any thing with gateway?

exchange 2010

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

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.

Email Servers

Interactions between email servers and clients are governed by email protocols. The three most common email protocols are POP, IMAP and MAPI. Most email software operates under one of these (and many products support more than one).  The correct protocol must be selected, and correctly configured, if you want your email account to work.