Marcelo Machado: > I agree with everyone. Not a good idea but the customer is insisting on it. > > I will see what I can do. If anyone knows how to do this please help me.
The request appears to be a classical example of the XY problem: asking for help to implement the wrong solution. Speaking of which, smtpd_recipient_limit is not a per-user or per-domain feature, therefore the options are: - Configure master.cf with a dedicated smtpd service for this customer, and point their systems to this service: 1.2.3.4:smtp inet n - n - - smtpd -o smtpd_recipient_limit=1 This requires adding an IP address alias to the host. - Configure a Milter to enforce a recipient count for mail from this customer. - Configure some content filter to enforce a recipient count for mail from this customer. Wietse