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Does your exchange server happen to have more than 1 network-interface card installed?
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There are 8 exchange servers each in DAG , each server having 2 mailbox database .<br />
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In DAG there may be 2 NIC in one server , yes it can be a possibility. I just checked on eof the exchange server NIC , its says dual port multifunctional.
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I need to find root cause analysis of following incidents taking place in exchange 2010 environment very often.<br />
<br />
we have 4 CAS servers and 16 mailbox database in DAG Environment<br />
<br />
1)Outlook Web App connectivity &nbsp;transaction failures ( Both internal &amp;&nbsp;external)<br />
<br />
error attached.<br />
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The-error-shows-as-under.docx

I need to find root cause analysis of following incidents taking place in exchange 2010 environment very often.

we have 4 CAS servers and 16 mailbox database in DAG Environment

1)Outlook Web App connectivity  transaction failures ( Both internal & external)

error attached.

EXCHANGE, CAS CONNECTIVITY

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.