increase inbox size in postfix

I want to increase inbox/ mailbox size of a particular user in postfix.

Currently default size of mailbox for all user is set as 100 mb in

root@mail#postconf mailbox_size_limit
mailbox_size_limit = 102400000

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There are multiple ways to limit mailbox size in email, but inside postfix itself you have two ways:

mailbox_size_limit = ###
message_size_limit = ###

The first limits peoples mailbox, the second the individual message size
samirroulAuthor Commented:
Hi, Thanks for replying, however the solution you are giving is for global mailbox size....setting this variable in will change the mailbox size for all my case I want the default mailbox size to be 100 mb for all the users and 200 mb for some particular users....

I am looking solution for the second requirement....
Christopher Raymond MendozaCommented:
Hello, unfortunately Postfix was not designed for your second requirement.

There are patches that can possibly be used though. Just check this site:

Hope this helps.

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In my opinion, you have to switch your configuration to a more flexible one with users defined in a MySQL (or LDAP or whatever) database.
Then there is a patch to be able to manage quotas then:

I'm running a config with users defined in mysql, I have a default quota I can override when I want.
I can give you directions (or a full article, but in french)

Maciej SsysadminCommented:
In addition to above - if you have dovecot as your POP3/IMAP server, you can use its delivery agent, and use dovecot quotas.
More info here:
samirroulAuthor Commented:
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