Alias Nonlocal Addresses
As distributed, a normal configuration file will disallow certain addresses on the left side of the aliases file. Consider the following two addresses:
Bob@our.host: bob Bob@another.host: bob@home.isp
In both examples, the intention is for mail to bob at the local host (our.host) to be delivered to the local mailbox for the user bob. This will happen in the first example (assuming a normal configuration file) because the @our.host part of the address will be removed by rule sets:
canonify input: Bob @ our.host Canonify2 input: Bob < @ our.host > Canonify2 returns: Bob < @ our.host . > canonify returns: Bob < @ our.host . > parse input: Bob < @ our.host . > Parse0 input: Bob < @ our.host . > Parse0 returns: Bob < @ our.host . > ParseLocal input: Bob < @ our.host . > ParseLocal returns: Bob < @ our.host . > Parse1 input: Bob < @ our.host . > Parse1 returns: $# local $: Bob parse returns: $# local $: Bob 2 input: Bob 2 returns: Bob EnvToL input: Bob EnvToL returns: Bob final input: Bob final returns: Bob mailer local, user Bob
Because the local
delivery agent was selected, and because that
delivery agent has the F=A flag set (F=A on page 767), mail to
Bob@our.host will be aliased
for local delivery to the user
bob.
The second address, Bob@another.host,
however, selects an esmtp delivery agent:
canonify input: Bob @ another . host Canonify2 input: Bob < @ another . host > Canonify2 returns: Bob < @ another . host > canonify returns: Bob < @ another . host > parse ...
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