On 2013.07.08 08.25, Dotan Cohen wrote:
Form googling I found this "solution" online but it does not work as I expected.
instead of googling, simply use the postfix documentation that came with the software. your goal is accomplished by implementing smtp auth, which postfix offers by way of sasl authentication. to that end, this is documented in SASL_README. i would recommend that you use dovecot rather than cyrus for sasl. while SASL_README of course includes a fair amount of documentation for the associated sasl software, you'll likely also want to reference the documentation provided with that software as well.
on a related note, as this is for humans to send mail from their mail clients, you'll want to configure a proper submission [port 587] service. see the commented example in master.cf for a starting point. smtp auth should be offered only via the submission service, and not via mx service [port 25]. additionally, encryption should be required for submission traffic.
-ben
