Well, I believe you meaning: reject_unauthenticated_sender_login_mismatch. I tried that on my test env, but I did not add the permit_sasl_authenticated and I had issues. Now, it's better, thanks!
I still need the "DSN" style message back for those users and I hope to have some ideas. ----- Αρχικό μήνυμα ----- Απο: Jose Ildefonso Camargo Tolosa <ildefonso.cama...@gmail.com> Προς: Postfix Users <postfix-users@postfix.org> Κοιν.: Στάλθηκε: 5:49 π.μ. Πέμπτη, 9 Φεβρουαρίου 2012 Θεμα: Re: Implement SMTP Auth in a non-disruptive way? Greetings, Reindi, search through postfix docs for that: + permit_sasl_authenticated + permit_mynetworks (play with the mynetworks definition, so, initially you allow all mail from your local network, and when *all* of your users moved to new authenticated schema, you just removed local network from here) That one is not so important, but I have found it really useful in my environment: + reject_authenticated_sender_login_mismatch (this is an interesting one, that you can later replace with: reject_sender_login_mismatch ... now, I use LDAP with all of this). I am a little in a hurry now, but if you read the docs you may get the idea. I hope this helps, Ildefonso Camargo.