Khosrow Ebrahimpour wrote:
> Hi postfix-users,
>
> We recently migrated from a Sendmail/Cyrus environment to a Postfix/Courier 
> setup. Some of the users had ".forward" files that would forward their mail 
> to an exchange server in our network, and this was done with a file like this 
> one : 
>
> ===
> @ms-exch.example.com:[EMAIL PROTECTED]
> ===
>
>   

.forward files are only used on delivery by local(8) and must be in
alias(5) map format
> Since the migration, this feature doesn't work anymore. ms-exch is a virtual 
> host that maps to one of three actual servers. And the so simply putting a 
> rule that would forward mail to [EMAIL PROTECTED] doesn't work. 
> I've looked at transport maps but I'm not sure this problem can be solved 
> using them.. as per the following thread:
> http://groups.google.com/group/list.postfix.users/browse_thread/thread/733c642ef2ccab35/d7cac2e02e313d36
>   

transport(5) maps, like the documentation says, can use any key listed
in the Table Search Order section, including [EMAIL PROTECTED], to route
mail.
As mouss notes in that archived post, transport maps are highly
sensitive to outages.
Database maps (ldap,*sql) are allowed but must have high availability.

I suggest fully reading http://www.postfix.org/transport.5.html

Brian

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