split route for outbound smtp email   

I have a requirement to assign diferent routes for outbound email depending 
on the source smtp domain.

Basically we have an internal mail relay smart host which is currently 
relaying all email to the internet, and I now need to forward all email for 
one of the SMTP mail domains that I have on my exchange box to a diferent 
smart host which is on the internet and will do outbound spam and virus 
filtering, etc.

I have also been asked to implement TLS for the outbound connection to the 
internet based relay, but this is not essential at this stage as the outbound 
internet relay is currently for testing and once we are happy with it we will 
change all email to route to the external relay and remove the current 
requirement for having multiple outbound routes.

I apreciate any help that can be given.

date: Fri, 19 May 2006 08:03:02 -0700   author:   Marcus Bentley

RE: split route for outbound smtp email   

I think I've found this may be impossible where all mailboxes are on a single 
server, but am now looking at building a new Exchange Server in the same org 
but in a diferent routing group, but am unsure how routing groups change the 
behaviour of an Exchnage organisation.

Basically I have front end servers that handle incoming pop3, webmail, OMA, 
IMAP and BES connections through an ISA server and currently a single 
mailbox, public folder server all within a single routing group. If I build a 
new mailbox server within the same organisation but in a separate routing 
group will that allow me to set a diferent aoutbound SMTP connector for that 
server and migrate mailboxes accross as and when I want them to use the 
alternate outbound route?
Would this affect mailboxes accessed by POP3, IMAP, OMA, etc when their 
mailbox is moved out of the routing group where the front end servers accept 
these connections?

Thanks for any help.

"Marcus Bentley" wrote:

> I have a requirement to assign diferent routes for outbound email depending 
> on the source smtp domain.
> 
> Basically we have an internal mail relay smart host which is currently 
> relaying all email to the internet, and I now need to forward all email for 
> one of the SMTP mail domains that I have on my exchange box to a diferent 
> smart host which is on the internet and will do outbound spam and virus 
> filtering, etc.
> 
> I have also been asked to implement TLS for the outbound connection to the 
> internet based relay, but this is not essential at this stage as the outbound 
> internet relay is currently for testing and once we are happy with it we will 
> change all email to route to the external relay and remove the current 
> requirement for having multiple outbound routes.
> 
> I apreciate any help that can be given.

date: Tue, 23 May 2006 02:07:01 -0700   author:   Marcus Bentley

Re: split route for outbound smtp email   

Hi,

If you create another routing group and create a SMTP connector in this 
routing group, you can have all mails sent to the internet from this routing 
group go thru this connector and all mails to the internet from the original 
routing group uses the original SMTP connector. This will not affect the 
client access methods as you have front-end servers (as long as there is 
connectivity fron the fe server to the new be server).

Leif

"Marcus Bentley"  wrote in message 
news:FFAF76BD-A830-40E5-B934-8B4EAAA84102@microsoft.com...
>I think I've found this may be impossible where all mailboxes are on a 
>single
> server, but am now looking at building a new Exchange Server in the same 
> org
> but in a diferent routing group, but am unsure how routing groups change 
> the
> behaviour of an Exchnage organisation.
>
> Basically I have front end servers that handle incoming pop3, webmail, 
> OMA,
> IMAP and BES connections through an ISA server and currently a single
> mailbox, public folder server all within a single routing group. If I 
> build a
> new mailbox server within the same organisation but in a separate routing
> group will that allow me to set a diferent aoutbound SMTP connector for 
> that
> server and migrate mailboxes accross as and when I want them to use the
> alternate outbound route?
> Would this affect mailboxes accessed by POP3, IMAP, OMA, etc when their
> mailbox is moved out of the routing group where the front end servers 
> accept
> these connections?
>
> Thanks for any help.
>
> "Marcus Bentley" wrote:
>
>> I have a requirement to assign diferent routes for outbound email 
>> depending
>> on the source smtp domain.
>>
>> Basically we have an internal mail relay smart host which is currently
>> relaying all email to the internet, and I now need to forward all email 
>> for
>> one of the SMTP mail domains that I have on my exchange box to a diferent
>> smart host which is on the internet and will do outbound spam and virus
>> filtering, etc.
>>
>> I have also been asked to implement TLS for the outbound connection to 
>> the
>> internet based relay, but this is not essential at this stage as the 
>> outbound
>> internet relay is currently for testing and once we are happy with it we 
>> will
>> change all email to route to the external relay and remove the current
>> requirement for having multiple outbound routes.
>>
>> I apreciate any help that can be given.

date: Tue, 23 May 2006 23:22:25 +0200   author:   Leif Pedersen [MVP]