You need a policy-server: http://www.postfix.org/addon.html#policy
If you already use dovecot then you can use sieve to delete incoming messages
bigger than 10MB: https://wiki.dovecot.org/Pigeonhole/Sieve
> On 22 Jun 2018, at 07:21, Sec Adm wrote:
>
> Hi list,
>
> I have a few users which us
Hi list,
I have a few users which use a metered mobile connection and I need them to
have restriction in monthly volume used and in each msg size different
than my normal
recipients. eg Normal users can send or receive up to 10MB message but for
them I need
to have a much lower restriction. Is it