Inbound & Outbound emails are not being processed due to User: system created by the customerIssue Inbound & Outbound emails are not being processed due to User: system created by the customerReleaseAll Available Releases.CauseInbound and Outbound emails were not being processed as the customer created a user with User ID: system Below are the steps that needs to be taken to ensure emails are not being processed in the instance: 1) Email Diagnostics: Review the email diagnostics page to ensure email sending and receiving is enabled. 2) You can add property:glide.smtp.debug which will log additional information in the wrapper log when the SMTP Sender job executes. 3) Ensure the STMP Sender jobs are executing and are not claimed by nodes that are invalid. 4) Look at the XML Stats of the instance and look at section notification.stats. Within that section look at outbound and this will give you information of the SMTP Sender jobs i.e. last run time, state and processing duration. Below is the snippet: <outbound> <email> <enabled>true</enabled> <average_processing_time>0</average_processing_time> <oldest_sendready_age>0</oldest_sendready_age> <sent_count>0</sent_count> <send_ready_count>0</send_ready_count> <send_failed_count>0</send_failed_count> <send_retry_count>0</send_retry_count> <send_ignored_count>0</send_ignored_count> <jobs> <job class="SMTPSenderJob"> <sys_id>72af8d4f371022000c50cef954990e69</sys_id> <state>ready</state> <job_processing_duration>11</job_processing_duration> <last_runtime_timestamp>2020-03-09T12:50:14.000Z</last_runtime_timestamp> </job> <job class="SMTPSenderJob"> <sys_id>d8e56792c0a80064007e86b882a6acc7</sys_id> <state>ready</state> <job_processing_duration>15</job_processing_duration> <last_runtime_timestamp>2020-03-09T12:50:18.000Z</last_runtime_timestamp> </job> </jobs> </email> </outbound> </notification.stats>ResolutionUser 'system' was renamed to 'oldsytem' and the instance was restarted or you can delete this user record.Related LinksEmail Diagnostics: https://docs.servicenow.com/csh?topicname=r_MailDiagnostics.html&version=latest Advanced Email Properties: https://docs.servicenow.com/csh?topicname=r_AdditionalProperties.html&version=latest Email Reader / SMTP Sender job stuck: https://support.servicenow.com/kb_view.do?sysparm_article=KB0679998