Heiko Baumann wrote:
On Sat, 21 Mar 2009 00:22:24 +0100, mouss <mo...@ml.netoyen.net> wrote:
Heiko Baumann a écrit :
hello,
in our postfix setup we use virtual_alias_maps to build some simple
mailing-/distribution lists. now we want to reject every mail to a list
where the sender is not a member of the list.
example:
virtual_alias_maps
li...@domaina.tld us...@domain1.tld us...@domain1.tld us...@domain1.tld
li...@domainb.tld us...@domain2.tld us...@domain2.tld us...@domain2.tld
us...@domain1.tld is allowed to send to li...@domaina.tld but not to
send
to li...@domainb.tld
us...@domain2.tld is allowed to send to li...@domainb.tld but not to
send
to li...@domaina.tld
unknownu...@unknowndomain.tld is allowed to send to us...@domainx.tld
but
not to li...@domainx.tld
to accomplish this i found
http://www.postfix.org/RESTRICTION_CLASS_README.html#internal and it
seems
to work.
but im not sure how this will scale with a greater amount of
lists/members
and if it would be a better decision to use some policy daemon to do
this
stuff.
any recommendations?
use a list manager (mailman, sympa, ...).
i guess a list manager is overkill for our setup. we just export the alias
maps from a db and only need the additional feature to block mails to a
list from an "unknown" sender.
it looks like we can redirect mail via the policy interface in postfix. is
it okay to use a policy daemon for redirection or are there any drawbacks?
anyone using such a setup?
The suggestion to use a list manager is the "correct"
solution. List managers already have the controls you are
asking for with a well-defined admin interface.
Yes, you can do this with a postfix policy server by defining
a list of valid senders for the recipient lists. There are
some pre-written policy servers that may do what you need,
look at http://www.postfix.org/addon.html#policy
particularly the postfwd and apolicy servers should be able to
do what you ask.
-- Noel Jones
