Have you run 'postmap /etc/postfix/sender_access'?

@derfy:

Have you run 'postmap /etc/postfix/sender_access'?

yes.

And this is listed in the 'smtpdsenderrestrictions' area? Try turning on verbose logging with the -v switch in master.cf

Is mail@address.com the envelope sender, as seen in your postfix mail log? (This may be different from the From: address, seen in your mail client.)

@derfy:

And this is listed in the 'smtpdsenderrestrictions' area? Try turning on verbose logging with the -v switch in master.cf

I have this

checksenderaccess

hash:/etc/postfix/sender_access

in the smtpdrecipientrestrictions area.

The are you mentioned is this:

smtpdsenderrestrictions =

permit_mynetworks,

permitsaslauthenticated,

rejectnonfqdn_sender,

rejectunknownsender_domain,

permit

what should I add to it?