https://community.appian.com/support/w/kb/1330/kb-1868-appian-fails-to-send-email-due-to-4-3-1-insufficient-system-resources-erroren-USTelligent Community 12https://community.appian.com/support/w/kb/1330/kb-1868-appian-fails-to-send-email-due-to-4-3-1-insufficient-system-resources-errorThu, 21 Feb 2019 04:43:42 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:eda1ac16-5ab9-4006-b731-98434af9c041Parmida Borhanihttps://community.appian.com/support/w/kb/1330/kb-1868-appian-fails-to-send-email-due-to-4-3-1-insufficient-system-resources-error#commentsCurrent Revision posted to Appian Knowledge Base by Parmida Borhani on 2/21/2019 4:43:42 AM<br /> <h2>Symptoms</h2> <p>Appian fails to send emails with the following error printed in the&nbsp;<strong>tomcat-stdOut.log</strong> file located in the&nbsp;<code>&lt;APPIAN_HOME&gt;/logs</code> directory:&nbsp;</p> <pre>ERROR com.appiancorp.process.engine.UnattendedJavaActivityRequest - An error occurred <span class="code-keyword">while</span> executing activity: id=536873858, classname=com.appiancorp.process.runtime.activities.SendEmailActivity com.appiancorp.suiteapi.process.framework.ActivityExecutionException: Failed to send email ... Caused by: com.sun.mail.smtp.SMTPSendFailedException: 452 4.3.1 Insufficient system resources</pre> <h2>Cause</h2> <p>This issue occurs when the Exchange mail server is low on disk or memory and cannot process more requests.</p> <h2>Action</h2> <p>Engage the Exchange server team to investigate the resources used by the server and take the right actions for processing new emails.&nbsp;</p> <h2>Affected Versions</h2> <p>This article applies to all versions of Appian using Microsoft Exchange as the mail server.&nbsp;</p> <p>Last Reviewed: February 2019</p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: email, application server, infrastructure</div> https://community.appian.com/support/w/kb/1330/kb-1868-appian-fails-to-send-email-due-to-4-3-1-insufficient-system-resources-error/revision/2Mon, 18 Feb 2019 13:39:09 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:eda1ac16-5ab9-4006-b731-98434af9c041Anirudh Rathihttps://community.appian.com/support/w/kb/1330/kb-1868-appian-fails-to-send-email-due-to-4-3-1-insufficient-system-resources-error#commentsRevision 2 posted to Appian Knowledge Base by Anirudh Rathi on 2/18/2019 1:39:09 PM<br /> <h2>Symptoms</h2> <p>Appian fails to send emails with the following error printed in the&nbsp;<strong>tomcat-stdOut.log</strong> file located in the&nbsp;<code>&lt;APPIAN_HOME&gt;/logs</code> directory:&nbsp;</p> <pre>ERROR com.appiancorp.process.engine.UnattendedJavaActivityRequest - An error occurred <span class="code-keyword">while</span> executing activity: id=536873858, classname=com.appiancorp.process.runtime.activities.SendEmailActivity com.appiancorp.suiteapi.process.framework.ActivityExecutionException: Failed to send email ... Caused by: com.sun.mail.smtp.SMTPSendFailedException: 452 4.3.1 Insufficient system resources</pre> <h2>Cause</h2> <p>This issue occurs when the Exchange mail server is low on disk or memory and cannot process more requests.</p> <h2>Action</h2> <p>Engage the Exchange server team to investigate the resources used by the server and take the right actions for processing new emails.&nbsp;</p> <h2>Affected Versions</h2> <p>This article applies to all versions of Appian using Microsoft Exchange as the mail server.&nbsp;</p> <p>Last Reviewed: February 2019</p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: email, application server, infrastructure</div> https://community.appian.com/support/w/kb/1330/kb-1868-appian-fails-to-send-email-due-to-4-3-1-insufficient-system-resources-error/revision/1Tue, 12 Feb 2019 22:22:53 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:eda1ac16-5ab9-4006-b731-98434af9c041Anirudh Rathihttps://community.appian.com/support/w/kb/1330/kb-1868-appian-fails-to-send-email-due-to-4-3-1-insufficient-system-resources-error#commentsRevision 1 posted to Appian Knowledge Base by Anirudh Rathi on 2/12/2019 10:22:53 PM<br /> <h2>Symptoms</h2> <p>Appian fails to send emails with the following error printed in <strong>tomcat-stdOut.log</strong> file located in <code>&lt;APPIAN_HOME&gt;/logs</code> directory:&nbsp;</p> <pre>2019-02-05 19:30:17,583 [Appian Work Item - 29530 - execution02 : UnattendedJavaActivityRequest] ERROR com.appiancorp.process.engine.UnattendedJavaActivityRequest - An error occurred <span class="code-keyword">while</span> executing activity: id=536873858, classname=com.appiancorp.process.runtime.activities.SendEmailActivity com.appiancorp.suiteapi.process.framework.ActivityExecutionException: Failed to send email ... ... Caused by: com.sun.mail.smtp.SMTPSendFailedException: 452 4.3.1 Insufficient system resources</pre> <h2>Cause</h2> <p>This issue occurs when the Exchange mail server is low on disk or memory and thus cannot process more requests.</p> <h2>Action</h2> <p>Engage Exchange server team to investigate the resources used by the server and take&nbsp;right actions for processing new emails.&nbsp;</p> <h2>Affected Versions</h2> <p>This article applies to all versions of Appian using Microsoft Exchange as the mail server.&nbsp;</p> <p>Last Reviewed: February 2019</p><div style="clear:both;"></div> <div style="font-size: 90%;">Tags: email, application server, infrastructure</div>