Postfix Mysql maps

[deneb]

Hi all!
Is it possible to use the Mysql maps in Zimbra's postfix for example to define the restrictions like "check_sender_access" ?

Example of postfix_recipient_restrictions.cf

.
.
reject_non_fqdn_recipient
permit_sasl_authenticated
permit_mynetworks
reject_unauth_destination
check_client_access hash:/opt/zimbra/conf/postfix_rbl_override
check_sender_access mysql:/etc/zimbra/postfix_sender_access
reject_unlisted_recipient
..

Thanks in advance for the help!

Edit: I want add a thing: I don't want to use the embedded mysql of zimbra, but another istance. On Ubuntu system, I know the postfix-mysql package, but I don't know if it is possible to use with zimbra.