Email being sent using online marketing - workflow - triggers. The CMS API's are being used in action methods.
CMS_Email I mentioned because we are seeing 60% of successful mail sent to user does have data in this table. Same code is executing for the same user, but for remaining one we are not able to get failure notification or any failed mail status. Not sure what happened with them. I will try the web.config logging options though.
We are having hard time to understand this issue, why it is intermittently. That's why tried to find some code flows.
Will there be any chance that due to network issue or configuration issue the threadabort exception would occur and we are not able to log that in event log?