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Based on the information that you have supplied - impossible to know. <br />
That is like telling a car mechanic there is a light on the dashboard and no other information. <br />
<br />
You need to post the entire event log entry, including the text. <br />
<br />
Simon.<br />
<br />
--<br />
If your question has been answered, please remember to accept the answer and close the question. 
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Based on the information that you have supplied - impossible to know.
That is like telling a car mechanic there is a light on the dashboard and no other information.

You need to post the entire event log entry, including the text.

Simon.

--
If your question has been answered, please remember to accept the answer and close the question.

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Thanks for the reply. Detail event displayed as:<br />
<br />
Error 9667<br />
Msexchangeis<br />
Failed to create a new named property for database &quot;First Storage Group\Mailbox Store Staff&quot; because the number of named properties reached the quota limit (8192).<br />
&nbsp;User attempting to create the named property: &quot;cloudmark&quot;<br />
&nbsp;Named property GUID: 00020386-0000-0000-c000-00<wbr />0000000046<wbr /><br />
&nbsp;Named property name/id: &quot;X-Inliniac-MailScanner-Fr<wbr />om&quot;<br />

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Thanks for the reply. Detail event displayed as:

Error 9667
Msexchangeis
Failed to create a new named property for database "First Storage Group\Mailbox Store Staff" because the number of named properties reached the quota limit (8192).
 User attempting to create the named property: "cloudmark"
 Named property GUID: 00020386-0000-0000-c000-000000000046
 Named property name/id: "X-Inliniac-MailScanner-From"


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<div class="content wysiwyg-content">
Event ID 9667 Source: ExchangeIS appears on Exchange 2003 server. Cloudmark server is running on different server to filter spam. What is the root cause of the issue?
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Event ID 9667 Source: ExchangeIS appears on Exchange 2003 server. Cloudmark server is running on different server to filter spam. What is the root cause of the issue?

Exchange 2003 Event 9667 Source: ExchangeIS

The Microsoft Server topic includes all of the legacy versions of the operating system, including the Windows NT 3.1, NT 3.5, NT 4.0 and Windows 2000 and Windows Home Server versions.

Microsoft Server OS

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.