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
> 

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