The "TrainSignal" brand was acquired by Pluralsight , and the content is now hosted on their platform.
If you are looking for the software or management tools rather than just the training videos, Microsoft provides several resources for free: Microsoft Exchange Server 2013 and above Management Pack The "TrainSignal" brand was acquired by Pluralsight ,
: Implementing Database Availability Groups (DAG). Free Administrative Tools & Documentation : You can
: Configuring transport rules and malware protection. Free Administrative Tools & Documentation Recipients & Objects : Managing mailboxes and groups
: You can access the Exchange Server 2013 Administration series through a Pluralsight subscription. New users can often use a Free Trial to view the courses at no cost for a limited time. Course Modules : The training typically covers:
: Setting up mailbox and client access roles. Recipients & Objects : Managing mailboxes and groups.