com.manageengine.servicedesk.mailutils.MailException: Error while adding request via mail

at-com.manageengine.servicedesk.mailutils.RequestMailHandler.handleMailExceptionForAPICall(RequestMailHandler.java:1334)

at com.manageengine.servicedesk.mailutils.RequestMailHandler.processRequestAddition(RequestMailHandler.java:1301)

at com.manageengine.servicedesk.mailutils.RequestMailHandler.handleMailObject(RequestMailHandler.java:249)

at com.manageengine.servicedesk.mailutils.DefaultMailHandler.handleMailObject(DefaultMailHandler.java:28)

at com.manageengine.servicedesk.mailutils.ModuleHandler.handleMailObject(ModuleHandler.java:121)

at com.adventnet.servicedesk.mailutils.MailProcessor.processEMail(MailProcessor.java:69)

at com.adventnet.servicedesk.helpdesk.mail.task.MailFetchingTask.emailThread(MailFetchingTask.java:375)

at com.adventnet.servicedesk.helpdesk.mail.task.MailFetchingTask.executeTask(MailFetchingTask.java:132)

at com.adventnet.taskengine.internal.SchedulerBean.executeTask(SchedulerBean.java:634)

at sun.reflect.GeneratedMethodAccessor97.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at com.adventnet.mfw.bean.BeanProxy.invoke(BeanProxy.java:115)

at com.sun.proxy.$Proxy10.executeTask(Unknown Source)

at com.adventnet.taskengine.internal.ScheduleExecutor.executeNextTask(ScheduleExecutor.java:191)

at com.adventnet.taskengine.internal.ScheduleExecutor.run(ScheduleExecutor.java:86)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)

at java.util.concurrent.FutureTask.run(FutureTask.java:266)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)

at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)