Pkg exim4 users - Oct 2007 - Domain on private IP

>> If mail.healthnet.org.zw receives a message for
>> userx at healthnet.zw it should check whether userx is a valid
>> username on healthnet.zw and deliver it to mail.healthnet.zw
>> only if userx is a valid username; if it''s not a valid
username
>> mail.healthnet.org.zw should return the message to sender with
>> a "user unknown" error.
 > Ok. The way you have done this is one solution. Another would
 > be to give your exim some way to access the internal server''s
 > user list of to have it doing recipient callouts.

Thanks for confirming that this is a reasonable approach.

At present every time the user list changes a copy is mailed to the MX host and
written to the user file by a Perl script.  Recipient callouts sounds like a
neater solution.  I''d appreciate any pointers you can suggest.

Regards,
Rob

On Wed, Oct 03, 2007 at 11:30:02AM +0200, Rob Borland
wrote:
> At present every time the user list changes a copy is mailed to the MX host
and
> written to the user file by a Perl script. 
That''s neat. Rather neater, in my opinion, than using callouts.

Is the user list available from a database or via LDAP that the MX
could directly query?
>  Recipient callouts sounds like a neater solution.  I''d appreciate
any
>  pointers you can suggest.
/etc/exim4/exim4.conf.template, search for "recipient/callout". It is
even documented there.

Greetings
Marc

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