Reject SMTP Connections when Reaching the Limit

5 pts.
Tags:
Postfix
SMTP
SMTP Connection
We run Postfix with default smtp connection limit = 100, when the limit is reached and another request comes in, it seems Postfix does not reject it explicitly, instead, the request is put into a queue. This is causing problem on our firewall, because it considers the connection is being set up. If Postfix is under attach with a lots of connection requests, the firewall goes down first. Is there a way to force Postfix reject the additional requests when the connection limit is reached? Thanks a lot.

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