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zimbra 451 4.3.5 Server configuration problem [solved problem]

You getting this error "zimbra 451 4.3.5 Server configuration problem" in zimbra.log. How to this is solved problem.
You may reading link as below:

zimbra 451 4.3.5 Server configuration problem

The log error as below:
Jan 22 11:31:36 mta postfix/smtpd[9984]: NOQUEUE: reject: RCPT from unknown[198.54.114.232]: 451 4.3.5 Server configuration problem; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<HuuPV>

How I do it....

The first
To increase RAM, CPU for your zimbra system. For example, if your zimbra system  size medium and larger. To increase >= 16GB RAM and >= 8 CPU for zimbra MTA system.
The second
To configure cbpolicyd.conf.in file with parameter min_servers, min_spare_servers, max_spare_servers, max_servers, max_requests the appropriate for your zimbra system configuration.

To openning and configure cbpolicyd.conf.in file
cat /opt/zimbra/conf/cbpolicyd.conf.in
The content to configure as below:
#min_servers=%%zimbraCBPolicydMinServers%%
#min_spare_servers=%%zimbraCBPolicydMinSpareServers%%
#max_spare_servers=%%zimbraCBPolicydMaxSpareServers%%
#max_servers=%%zimbraCBPolicydMaxServers%%
#max_requests=%%zimbraCBPolicydMaxRequests%%
min_servers=8
min_spare_servers=8
max_spare_servers=16
max_servers=64
max_requests=1000

Conclusion

The error "zimbra 451 4.3.5 Server configuration problem" it's solve. You can comment below with zimbra error log

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