Nigel Gilbert a écrit : > > > On 04/01/2009 19:33, "Sahil Tandon" <sa...@tandon.net> wrote: > >> Nigel Gilbert wrote: >> >>> I have Postfix running on dusty.soc.surrey.ac.uk. I would like mail from >>> the internet addressed to unknown local users on this server (e.g. to >>> x...@soc.surrey.ac.uk) to be re-addressed and forwarded >> Before continuing, please clarify: are the unknown local users known >> relay recipients? Or are you trying to devise some sort of 'catch-all' >> that forwards *all* mail to unknown users (local or otherwise) to this >> other mail server? The latter is a bad idea. >> >> [...] > > The latter, but although it may in general be a bad idea, (1) the other > server (surrey.ac.uk) is well set up for catching and dealing with spam etc. > (e.g. all mail sent to it is processed through messagelabs span filtering), > and (2) there is no easily accessible list of users that are known on > surrey.ac.uk, but unknown to soc.surrey.ac.uk. >
the question is whether some users may be rejected by the second server. if so, they must also be rejected by the first one. if this is ok, then simply declare the domain as a relay domain and use virtual_alias_maps to deliver some users locally.
