Recipient Limit of a Message in Zimbra

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root@mail:~# su – zimbra

Check the current limit:

zimbra@mail:~$ postconf | grep smtpd_recipient_limit 

smtpd_recipient_limit = 1000    ##This is the default recipient limit

zimbra@mail:~$ postconf -e 'smtpd_recipient_limit = 10' 


It will restrict the recipient limit to 10. You may adjust the number based on your scenario.

To apply settings.

zimbra@mail:~$ postfix reload

After applying this settings, you will get an error while sending a message greater than the threshold value (in this case: 10).

It is also to be mentioned that you can’t restrict to/cc/bcc field individually. Rather it will apply on all recipients of a message.


Ref: https://learnandgains.blogspot.com/2020/05/recipient-limit-of-message-in-zimbra.html



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