How to zimbra 451 4.3.5 Server configuration problem [solved problem]

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Introduction

If you're encountering the error "Zimbra 451 4.3.5 Server configuration problem" in your zimbra.log, this guide will walk you through the steps to diagnose and resolve the issue effectively.

zimbra 451 4.3.5 Server configuration problem

The error message typically appears in the zimbra.log file as follows:

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=<pvhuu90@gmail.com> to=<huupv@devopsskills.info> proto=ESMTP helo=<HuuPV>

How I do it....

Step 1: Increase System Resources

Zimbra requires adequate resources to run efficiently, especially for medium to large-scale systems. Insufficient RAM or CPU can lead to server errors, including the 451 4.3.5 configuration problem.

  • Recommended Configuration:

    • RAM: ≥ 16GB

    • CPU: ≥ 8 cores (for Zimbra MTA system)

Ensure your Zimbra system is provisioned with these or higher specifications to handle the load.

Step 2: Configure cbpolicyd.conf.in

The next step involves fine-tuning the configuration of cbpolicyd.conf.in. Adjusting the parameters ensures that the policy daemon handles requests efficiently.

Steps to Open and Configure the File:

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

Additional Resources

If you're still encountering issues, you may find the following guides helpful:

How to zimbra 451 4.3.5 Server configuration problem


Conclusion

The error "zimbra 451 4.3.5 Server configuration problem" it's solve. You can comment below with zimbra error log. If the issue persists or you encounter other errors, feel free to comment below with the specific error logs for further assistance.

Comments

  1. Jet SakibOctober 5, 2021 at 6:14 PM

    Hello. What will be the setting for mail server with user amount of 1800+?

    ReplyDelete

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