Categorizer event sink / routing event sink - Microsoft Exchange

On 14 Jul 2005 20:08:35 -0700, jordan.r.stewart@gmail.com hired a team
of monkeys to write:

>I want to reroute all email from a particular group of internal users
>through another (non-Exchange) server which will pre-process their
>email before it's sent to its final recipient.
>
>The best way I can see to do this (I've only just started learning
>about the way Exchange works though) is:
>- create a Categorizer event sink to look up the group membership of
>the sender. - if they belong to the group I want to reroute emails from
>then add some kind of attribute to the email.
>- create a Routing event sink to reroute the email based on the
>attribute set in the Categorizer event sink.
>
>Is this the best way to do it? I can't find much info on creating
>categorizer sinks (or routing sinks for that matter: what kind of info
>do I have access to in a routing sink?)

Writing categorizer event sinks is non-trivial and there's not a whole
lot of documentation out there[1]. Can you describe your needs a
little more? Do messages sent by these users need to be processed if
the recipients are internal, or only if they are destined for external
recipients? If it's just to external recipients you may be able to
bypass the need for an event sink altogether and use restrictions on
SMTP connectors to force mail from these recipients through a specific
connector which routes their outbound Internet e-mail to a smart host
(your external server) for processing.


[1] And if it's also for internal mail you'd potentially need to write
several event sinks to achieve a fluid and robust system.

--
Chris Scharff
Messaging Services Architect
MessageOne

Emergency Mail System: http://www.messageone.com/email-continuity/

The email only needs to be processed if it's to an external recipient,
and coming from a user in a particular Active Directory group.

How would it work using restrictions on SMTP connectors? It looks like
you can only reject mail. If one connector rejects an email does
Exchange then try another connector (that has a higher cost) or does
the email sending just fail?

- Jordan

On 18 Jul 2005 16:36:44 -0700, jordan.r.stewart@gmail.com hired a team
of monkeys to write:

>The email only needs to be processed if it's to an external recipient,
>and coming from a user in a particular Active Directory group.
>
>How would it work using restrictions on SMTP connectors? It looks like
>you can only reject mail. If one connector rejects an email does
>Exchange then try another connector (that has a higher cost) or does
>the email sending just fail?

If a user (or group) is not allowed to use a particular connector, if
there is another connector valid for that address space, they will use
it instead.

--
Chris Scharff
Messaging Services Architect
MessageOne

Business Continuity That Makes Business Sense
http://www.messageone.com/email-continuity/

Thanks for the help.

-- Jordan