Hello,
I have to setup an smtp server for a small office and I have zeroed in on postfix. I am going through the docs online but can't find the parameter that allows the sending of mails only to addresses listed in a whitelist type file. This is the peculiar requirement for the customer that emails can be sent outside the office, only to email addresses listed in a file. The *'smtpd_reject_unlisted_recipient" parameter works only for local recepients. Any pointers to this? *