We are using F9 to sent mail with attachments. When size crossing over 6.5 mb then CommOutboundMgr log is writing SMTP DATA error: 552 4.3.1 Message size exceeds fixed maximum message size. More over mail file is creating in /filesytem/sent folder with thread id and same mail is being sending ang failing again and again in every 15 mins and creating my filesystem to grow by mail size until we restart the server.
Can u pls let me know 1) where to track this thread id and kill this thread in business hour
2) Stop these repeated outbound requests permanently.