I've applied a Exchange 2013 throttling policy to restrict a mailbox to send at most 2 messages per minute. I tested via OWA and Outlook (IMAP/SMTP authenticated) not working. Any ideas?
Policy details
Name : LimitMessagesSent
MessageRateLimit : 2
RecipientRateLimit : Unlimited
Policy Association
Name
ThrottlingPolicyId
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Test
LimitMessagesSent