How to get-MailboxDatabase size quickly
get-MailboxDatabase us-* -Status |select ServerName, Name, DatabaseSize > c:\usmbxDBsize.txt
This command will provide us a list of the mailbox DBs their names starting with "US-"
How to block spoofing email from Exchange 2013/2016 or Office 365
1. Sign in to Exchange Admin Center http://outlook.office365.com/ecp with an admin account.
2. Navigate to mail flow>rules and click the add icon to create a new rule.
3. Create a rule like this (don’t forget to click more options):
With this rule, emails from outside your organization with your domain to your organization will be blocked.
2. Navigate to mail flow>rules and click the add icon to create a new rule.
3. Create a rule like this (don’t forget to click more options):
With this rule, emails from outside your organization with your domain to your organization will be blocked.