Answers to the questions:
1. There is no plan to go back to combine Exchange mgmt with ADUC. Please post questions with the current EMC, we'd like to help figure them out or add the missing features in future releases.
2. Mailbox size is not an optional column or filter field in the console now, so we cann't add this column or sort the mailboxes by size in the console. Part of the reason is that mailbox size is one property horned by Store (returned by Get-MailboxStatistics), to retrieve this property along with other mailbox properties horned by AD (returned by Get-Mailbox) we need to access Store in addition to accessing AD, this could be a perf issue, expecially in case of a huge amount of mailboxes.
You can use below PS cmdline to list all mailboxes on the <mbdb> database and sort them by message size:
[PS] D:>Get-Mailbox -Database <mbdb> | Get-MailboxStatistics | select DisplayName,TotalItemSize |
sort TotalItemSize
3. For the message size limits on receive connections, did you change this setting often? Or you just set it once while setting up the organization. As the convention, we expost the most common settings in the GUI and kept other advanced settings in the cmdline.
Thanks for all the feedback! ~