imap2exchange is our go to free migration tool however we started receiving errors submitting messages to Office365 outlook.coom.

When uploading some batches of emails to Office365 outlook.com results in the following exception, anyone through about a way to requeue batches?

9485312 [i2e: aalagely@localhost] INFO - Moving group of 2 messages (137731 bytes) from folder INBOX. 9488849 [i2e: aalagely@localhost] ERROR - Error converting user: {USERNAME}@localhost java.lang.RuntimeException: Exception creating messages on Exchange Server at edu.yale.its.tp.email.conversion.exchange.MessageUtil.createMessagesInExchange(MessageUtil.java:390) at edu.yale.its.tp.email.conversion.exchange.MessageUtil.createMessagesInExchange(MessageUtil.java:315) at edu.yale.its.tp.email.conversion.exchange.MessageCreator.create(MessageCreator.java:162) at edu.yale.its.tp.email.conversion.exchange.MessageCreator.createMessagesInExchange(MessageCreator.java:151) at edu.yale.its.tp.email.conversion.exchange.MessageCreator.addMessage(MessageCreator.java:124) at edu.yale.its.tp.email.conversion.MessageSynchronizer.createMessagesInExchange(MessageSynchronizer.java:203) at edu.yale.its.tp.email.conversion.MessageSynchronizer.sync(MessageSynchronizer.java:188) at edu.yale.its.tp.email.conversion.FolderSynchronizer.syncMessages(FolderSynchronizer.java:130) at edu.yale.its.tp.email.conversion.FolderSynchronizer.syncFolders(FolderSynchronizer.java:109) at edu.yale.its.tp.email.conversion.ExchangeConversion.convert(ExchangeConversion.java:245) at edu.yale.its.tp.email.conversion.ExchangeConversion.run(ExchangeConversion.java:107) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) Caused by: javax.xml.ws.soap.SOAPFaultException: An internal server error occurred. Try again later. at com.sun.xml.internal.ws.fault.SOAP11Fault.getProtocolException(SOAP11Fault.java:178) at com.sun.xml.internal.ws.fault.SOAPFaultBuilder.createException(SOAPFaultBuilder.java:125) at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:108) at com.sun.xml.internal.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:78) at com.sun.xml.internal.ws.client.sei.SEIStub.invoke(SEIStub.java:135) at com.sun.proxy.$Proxy37.createItem(Unknown Source) at edu.yale.its.tp.email.conversion.exchange.MessageUtil.createMessagesInExchange(MessageUtil.java:359) ... 13 more

Has anyone seen this before and has anyone thought of a way to resolve it?