On Mon, Jul 19, 2010 at 11:34:11PM +0200, mouss wrote:
> if the exchange box wants j...@example.com, you can add
> smtp_generic_maops entries to rewrite the address back:
> j...@exchange.example.com j...@example.com
> (This only works if the transport to exchange is "smtp", as the prefix
> of smtp_generic_maps suggests!).
More precisely, it only works if the delivery agent is smtp(8), the
transport name can be "smtp", "relay", "my-exchange-transport", ...
anything that uses the smtp(8) delivery agent.
> This approach is better than per user transports, because transport_maps
> imply performance overhead
Per-user transport lookups are OK per-se, but typically these imply
accessing a remote directory (SQL, LDAP, ...), and it is use of
remote data sources for transport lookups (not whether the lookup
key is a user or a domain) that is often not a good idea.
--
Viktor.
