Matthew Richardson: > Wietse Venema <wie...@porcupine.org> wrote:- > >>> Is it possible to accomplish a gradual shift of traffic from one mail > >>> relay > >> to another via postfix? > > > >The randmap() feature comes to mind. > > > >Instead of "relayhost = old.example" or "relayhost = new.example" use: > > > > default_transport = > > randmap:{smtp:old.example, smtp:old.example, smtp:new.example} > > > >Pick how many old versus new you need. > > Out of interest, how does this behave if one of the servers is temporarily > unreachable?
Randmap returns ONE result. Oh, and it should be default_tramsport_maps = randmap:{ ... } Wietse > Would Postfix try another server immediately, or defer the message until > the next try? > > -- > Best wishes, > Matthew >