Statistics and Reports

Plesk stores statistics and provides reports on attempts to exceed
limits that were made by each Plesk object – mailbox, domain, or
subscription. Statistics are stored for a month, but all reports are
created for the reporting period - a time interval within the last month
(for example, a day, two days, a week, and so on). You can configure
this period in Tools & Settings > Mail Server Settings >
Switch on limitations on outgoing email messages > Show reports
based on statistics for the last (specify a time period).

To view reports about attempts to exceed limits on outgoing mail:

Go to Tools & Settings > Outgoing Mail Control and select the
tab with the information you need:

• To see summarized information, go to the General tab, which shows
  the number of Plesk objects that have attempted to exceed limits, and
  the list of such objects.

• Objects that do not exceed the limits have the Sending mail
  status. If an object has reached its limit, its mail status changes
  to Not Sending.

  Note: If Plesk is installed with SmarterMail, outbound mail limits are
  set up on the SmarterMail side by means of SmarterMail API. In
  this case, no filtering is done by Plesk. As a result, the mail
  status of Plesk objects is not available.

• To see details about a certain Plesk object, go to the corresponding
  tab (Email Addresses, Domains, or Subscriptions), click
  the required object and view the report Attempts to send mail after
  reaching the limit.

  Also, in the Sent messages section, daily per-hour statistics are
  available for a certain Plesk object: You can see the number of
  attempts to send excessive mail for each hour of a certain day.