ODM Dirsync: Password Sync is not working between active directory domains: "System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time" (4368812)

Check the source and target AD environments, and ensure your firewall is not blocking our Directory Sync agent or the following ports:

•         Connecting to the Directory Sync web interface uses TCP port 443 (HTTPS).
•         Agent connections are initiated by the agent and require port 443 access to Directory Sync SaaS application.
•         Connecting to DCs uses TCP on ports 139, 389 (UDP), 445, and 3268.
•         Copying SID History uses TCP on ports 135, 137-139, 389 (UDP), 445, 1027, 3268, and 49152-65535.
  
  For further details click this link to our online documentation: https://support.quest.com/on-demand-migration/kb/4346298/which-ports-are-required-by-the-odmad-directory-synchronization-agent-4346298