Richard, On 02/19/2013 12:34 PM, richard lucassen wrote: > I have transport front-end servers for domains: > > domain1.tld > domain2.tld > domain3.tld > domain4.tld > [..] > domainX.tld > > I want to blacklist 1.2.3.4/24 only for destination domain3.tld (and > reply with a 5xx if possible). > > What's the best way to handle this? On the backend server somewhere? > But the backend server receives the mail from the frontend server, so > simple blacklisting will not work. > > Any hint? >
I think you are looking for this: http://www.postfix.org/RESTRICTION_CLASS_README.html HTH, Mikael
