reject_sender_login_mismatch problem

[Pol Hallen]

Hi all :-) I configurated postfix to check if a client is within the

smtpd_sender_login_maps = hash:/etc/postfix/smtpd_sender_login_maps

with sasl sender authentication, and:

smtpd_recipient_restrictions =
        permit_mynetworks,
        permit_inet_interfaces,
        reject_sender_login_mismatch,
        permit_sasl_authenticated,

seem everything works fine, but I've some problem like this:

Sender address rejected: not logged in

when I try to send an email that relay by another smtp :-/

any idea to solve this problem?

thanks!