On February 7th, 2019, we began updating our anti-abuse policies in order to better protect our customers and our infrastructure. Over the coming weeks, we will continue to make changes in order to decrease the number of false positives and curb outgoing spam from our system. For the security of our customers and infrastructure, we do not give advance notice of anti-abuse changes.
Due to this change, mailboxes that have been sending emails at a rate above our threshold will be limited or blocked by our system. Thresholds are not published in order to prevent malicious actors from circumventing our policies.
If you believe you have been wrongly impacted by this change, please submit a ticket for our review and use webmail as a workaround in the meantime.
Please review our sending best practices here:
Thursday, February 14, 2019