If this is your first time using Add2Exchange or you are upgrading or migrating, post here.
TS Checklist: Moving Add2Exchange Standard "Add2Exchange Migration" After an Exchange Migration with Old Add2Exchange Installation
Have old Add2Exchange Server available
Have the Stop/Start Add2Exchange Service for MS updates or reboot
Turn off auto MS updates so you can reboot after any MS update
Also Stop Add2Exchange Service before MS updates on this box or Exchange Server if not the same, Reboot after Antivirus Active File Scanning Exclusions
Pivot folder optimization if have private to private rels - remove per user read and unread in ESM or Exchange System Manager
Set Limits on retention to those folders and aging to 1,1 no replication by exchange for pivot public folder