Topic: Mail relay
in this article : http://www.iredmail.org/forum/topic334- … ution.html
you mention "To let postfix know this, you have to set 'domainBackupMX=yes' of your mail domain in LDAP."
My question is... how to do it? where I must put 'domainBackupMX=yes'? in what file?
also with this "c) Set proper 'mtaTransport' of your mail domain in LDAP"
in which file I must set proper 'mtaTransport' ?