We recently migrated our email server (4 days ago), ever since, half our users no longer receive any Jira/Confluence email notifications and the others only receive them intermittently. We have troubleshooted everything email server side and have no problems with any other provider, so it appears to be on Atlassian's side. I am not able to run most of the troubleshooting steps in the help guides since OnDemand instances appear to be badly crippled in functionality. Has anyone else encountered a similar issue and are there any fixes/workarounds?