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99% your next hop might not be responding or down. What is your next hop? ISP?
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99% your next hop might not be responding or down. What is your next hop? ISP?

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it is internal to exchange server as per nature of queue reported from hub to mailbox
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it is internal to exchange server as per nature of queue reported from hub to mailbox

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u mean transport service but how that will help?
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u mean transport service but how that will help?

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lot of emails are getting stuck in submission queue length lately &nbsp;on our exchange 2010 dag server<br />
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is there any reason we need to look <br />
<br />
like Retry Remote Delivery Queue Length-7008<br />
Aggregate Delivery Queue Length (All Queues)<br />
Statistic &nbsp; &nbsp; &nbsp;5618
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lot of emails are getting stuck in submission queue length lately  on our exchange 2010 dag server

is there any reason we need to look 

like Retry Remote Delivery Queue Length-7008
Aggregate Delivery Queue Length (All Queues)
Statistic      5618

exchange

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.