Receive Connectors are configured locally for each server.
Send Connectors are configured organization wide for all or some of the servers (Send Connectors are stored in Active Directory).
When you deploy the Edge Transport role to a server, it automatically creates two receive connectors. One for incoming messages from the internet and one for incoming connections from Hub Transport servers.
These two Receive Connectors can only start processing email when the Edge Transport server has gone through the Edge Subscription process (or has been configured manually).
When you deploy the hub Transport role to a server two "Receive Connectors are automatically created. One that allows clients to send messages (named Client) and one that allows Exchange users, servers and legacy Exchange servers to connect to it.
The PowerShell command to enable premium journaling is as follows :
New-JournalRule –Name <name> –Recipient <smtpaddress> –JournalEmailAddress <smtpaddress>
The PowerShell commands to enable standard journaling are as follows :
Enable-TransportAgent –Identity “Journaling Agent”
Set-MailboxDatabase <name> –JournalRecipient <smtpaddress)
Journaling in the Enterprise version of Exchange 2007 is per Recipient. It captures all mail (internal or external) for selected individuals. This is sometimes called ‘per recipient’ journaling.
Journaling in the Standard version of Exchange 2007 is per Mailbox Database only. It captures all mail (internal or external) for all members of a Mailbox Database
The –RetryTimeout parameter of the Move-Mailbox command specifies the maximum time that a move mailbox command may take before the process is considered failed.
Any move mailbox commands that take longer than this value will fail and the mailbox will not be moved.
Security groups are normally used for permissions. Although they can be ‘mail enabled’ they generally are not.
Distribution groups are normally used for email and therefore are normally mail enabled.