"Mark Arnold [MVP]" wrote:

> On Wed, 12 Sep 2007 10:48:00 -0700, Transam388
> <Transam***@discussions.microsoft.com> wrote:
>
> >     Although you can certainly have multiple inbound SMTP domains for a
> >single exchange server, is it possible to set it up in this manner but one of
> >the domains is going to be used by a trusted domain that is not part of the
> >original Exchange internal based domain.?
> >
> >     So comapny A has it's domain and built an Exchange 2003 and all is
> >good.  Comapny B has it's own domain and wants to share the use of the
> >Company A Exchange server.  Is this possible?   I am sure there will be more
> >to watch regarding recipient policies but just want to make sure it is
> >technically workable.  Thanks!!
>
> Sure. Take a look at:
> http://www.msexchange.org/articles_tutorials/exchange-server-2007/planning-architecture/exchange-2007-smtp-namespace-sharing-different-relay-domain-types.html
> It tells you all about internal and external relaying.
> Essentially you're going to create a connector so that Exchange
> accepts the message and then does what you want with it rather than
> just refusing it.
>

"Transam388" wrote:

> Well I guess this answers part of the question.  What I mean though is two
> different Active Directory domains sharing one Exchange server.?  The
> allowing in of different SMTP I know can be done but since Exchange uses ADUC
> for security I was not sure how it would handle or even allow users from a
> different active directory domain to be on the server.
>
> "Mark Arnold [MVP]" wrote:
>
> > On Wed, 12 Sep 2007 10:48:00 -0700, Transam388
> > <Transam***@discussions.microsoft.com> wrote:
> >
> > >     Although you can certainly have multiple inbound SMTP domains for a
> > >single exchange server, is it possible to set it up in this manner but one of
> > >the domains is going to be used by a trusted domain that is not part of the
> > >original Exchange internal based domain.?
> > >
> > >     So comapny A has it's domain and built an Exchange 2003 and all is
> > >good.  Comapny B has it's own domain and wants to share the use of the
> > >Company A Exchange server.  Is this possible?   I am sure there will be more
> > >to watch regarding recipient policies but just want to make sure it is
> > >technically workable.  Thanks!!
> >
> > Sure. Take a look at:
> > http://www.msexchange.org/articles_tutorials/exchange-server-2007/planning-architecture/exchange-2007-smtp-namespace-sharing-different-relay-domain-types.html
> > It tells you all about internal and external relaying.
> > Essentially you're going to create a connector so that Exchange
> > accepts the message and then does what you want with it rather than
> > just refusing it.
> >

"RichardL" wrote:

> Did you ever get a solution/ answer for this? I have a client that is looking
> at the same scenario - one exchange server 2003 in a central domain with full
> trusts to a couple of other domains.
>
> Thanks.
>
> "Transam388" wrote:
>
> > Well I guess this answers part of the question.  What I mean though is two
> > different Active Directory domains sharing one Exchange server.?  The
> > allowing in of different SMTP I know can be done but since Exchange uses ADUC
> > for security I was not sure how it would handle or even allow users from a
> > different active directory domain to be on the server.
> >
> > "Mark Arnold [MVP]" wrote:
> >
> > > On Wed, 12 Sep 2007 10:48:00 -0700, Transam388
> > > <Transam***@discussions.microsoft.com> wrote:
> > >
> > > >     Although you can certainly have multiple inbound SMTP domains for a
> > > >single exchange server, is it possible to set it up in this manner but one of
> > > >the domains is going to be used by a trusted domain that is not part of the
> > > >original Exchange internal based domain.?
> > > >
> > > >     So comapny A has it's domain and built an Exchange 2003 and all is
> > > >good.  Comapny B has it's own domain and wants to share the use of the
> > > >Company A Exchange server.  Is this possible?   I am sure there will be more
> > > >to watch regarding recipient policies but just want to make sure it is
> > > >technically workable.  Thanks!!
> > >
> > > Sure. Take a look at:
> > > http://www.msexchange.org/articles_tutorials/exchange-server-2007/planning-architecture/exchange-2007-smtp-namespace-sharing-different-relay-domain-types.html
> > > It tells you all about internal and external relaying.
> > > Essentially you're going to create a connector so that Exchange
> > > accepts the message and then does what you want with it rather than
> > > just refusing it.
> > >