Hi,

I have been running Postfix 2.5.x on a linux server using virtual
domains with PostgreSQL for a while now and I've just implemented a
basic check_sender_access policy using a hash.  Everything works fine,
but now I would like to convert this to an SQL statement and store the
data in the database.

I've looked through both [1] and [2] but am uncertain as to what the
appropriate query, and table structure, need to be:

[1] http://www.postfix.org/pgsql_table.5.html
[2] http://www.postfix.org/postconf.5.html#smtpd_client_restrictions

Can someone point me to any documentation to assist me?

Thank you,
John

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