Hi all, This is not my decision, but company policy of one of our clients: I need to restrict some users to sending mail internally only, and also receiving no mail from outside. So far I've done: main.cf: smtpd_recipient_restrictions = check_sender_access hash:/etc/postfix/restricted_senders check_recipient_access hash:/etc/postfix/restricted_recipients permit_mynetworks check_relay_domains smtpd_restriction_classes = local_only #local_only = # check_recipient_access hash:/etc/postfix/local_domains, reject local_only = check_sender_access hash:/etc/postfix/local_domains, reject And of course, made the appropriate restricted_senders ect files and hashed them. As it is above, it works as far as blocking senders go. If I uncomment the commented lines, it doesn't work at all. I think the way I typed it is wrong (in form). If I don't put the second "local_only=" in and just put the check_recipient_access and check_sender_access lines underneath each other, mail.log tells me that it's ignoring everything after the first "reject" What is it supposed to look like? Thanks -- Kind regards Hans du Plooy hansdp at newingtoncs dot co dot za