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Updated:August 12, 2014
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How are emails blocked by rate limiting reflected in the logs?
Rate limiting is used to define the maximum number of recipients per hour you are willing to receive from a remote host. When you have configured rate limiting on a listener or mail flow policy, your mail_logs log file will contain an entry stating "Rejected By Receiving Control" for each message attempt after the limit is exceeded. The following excerpt shows the format of a mail_logs log entry documenting a message that was blocked by rate limiting.
Sun Jan 30 19:03:27 2005 Info: Start MID 97 ICID 57 Sun Jan 30 19:03:27 2005 Info: MID 97 ICID 57 From: <firstname.lastname@example.org> Sun Jan 30 19:03:36 2005 Info: MID 97 ICID 57 To: <email@example.com> Rejected by Receiving Control