<div>
we do not have contract with MINEweeper.<br />
<br />
I tried stopping the service and checked mail flow it is the same
</div>


we do not have contract with MINEweeper.

I tried stopping the service and checked mail flow it is the same

<div>
I ran <br />
Get-TransportAgent<br />
<br />
I could not see &nbsp;Clearswift MINEsweeper(Antispam) <br />
<br />
I could see only <br />
<b>Transport Rule Agent<br />
Journaling Agent</b>
</div>


I ran
Get-TransportAgent

I could not see  Clearswift MINEsweeper(Antispam)

I could see only
Transport Rule Agent
Journaling Agent

<div>
Great you found the issue and solution. So, MINEsweeper was installed on Exchange or it was on a different server.
</div>


Great you found the issue and solution. So, MINEsweeper was installed on Exchange or it was on a different server.

<div>
<div class="content wysiwyg-content">
I have a strange situation. <br />
I am able to send email externally and internally and able to receive internal emails.<br />
<br />
But not able to receive external emails. I found all the emails stuck in the Clearswift MINEsweeper(Antispam) queue. Anyone has such experience. <br />
I telnet to exch server and tested. <br />
<br />
I started all the services of MINEsweeper<br />
<br />
Anyone can help to sort out this.
</div>
</div>


I have a strange situation. 
I am able to send email externally and internally and able to receive internal emails.

But not able to receive external emails. I found all the emails stuck in the Clearswift MINEsweeper(Antispam) queue. Anyone has such experience. 
I telnet to exch server and tested. 

I started all the services of MINEsweeper

Anyone can help to sort out this.

Clearswift MINEsweeper not releasing emails to 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

Various techniques are used to prevent email spam (unsolicited bulk email). No technique is a complete solution to the spam problem, and each has trade-offs between incorrectly rejecting legitimate email (false positives) vs. not rejecting all spam (false negatives) - and the associated costs in time and effort. Anti-spam techniques can be broken into four broad categories: those that require actions by individuals, those that can be automated by email administrators, those that can be automated by email senders and those employed by researchers and law enforcement officials.

AntiSpam

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.