Steps required for Domino to talk to Exchange after merger

[MarkhP]

We are about to go through a merger with a company that uses Exchange for mail. We will become newco.com after that and mail will come in through Exchange. We will still run Domino here and need to be able to route mails to/from the newco's Exchange server for internal mails. Because our users will become xxx.xxx@newco.com on Exchange and Domino I need to check what needs to be setup here on Domino.

So far I think I will need to do the following:-
1. Change the 'local primary internet domain' to newco.com
2. Put our existing .com domain in as the 'alternative internet alias domain'.
3. Under SMTP inbound relay controls, add the newco Exchange server to the allowed connections.
4. Under SMTP Basics, set the 'local internet domain smart host' to be the newco's Exchange server.
5. Replace all users internet addresses in the server names.nsf with xxx.xxx@newco.com (do this with formula agent).
6. Create a 'foreign SMTP domain' for the Exchange server (is this needed?)
7. I was planning on leaving the 'relay host for messages leaving the local internet domain' as is, so that we can send external mails without going over Exchange via VPN.

I think that I can leave the Notes domain/cert id etc alone as the name is internal only?.

Can anyone suggest anything else (or confirm I am even on the right track?!) and also would there be a correct sequence to doing these?. I am assuming at this point that the Exchange admin will take care of their side of things.

 

[MarkhP]

Bouncing just this once...

Dont be shy .. has nobody had to get Domino and Exchange to coexist in a company with Exchange as the primary postoffice? Being at the Domino end I want to make sure it works from day one.

 

[nickpark]

I recently setup Domino->Exchange coexistence in our migration from Domino to Exchange.

Emails now come in through Exchange, get delivered if there is a mailbox with that address. If not, it gets forwarded to Domino via an SMTP connector.

Domino delivers it if there is someone to deliver it to.

However, we have a small issue in that an invalid email address gets bounced between both servers until it dies with a "this message may be looping" sort of error. I nor our Domino support consuultants know how to fix this.

Also, for users in the NAB I had to set the "other internet mail" address to first.last@exchange.domain.com not just first.last@domain.com for the message to be forwarded out to Exchange.

 

[MarkhP]

Thanks for the info nickpark (nick?). Could you give me an idea of what you had to change to accomplish this (was I anywhere close?). Did you do it with 1x Exchange to 1x Domino, or did you have to put in an additional host?.
Cheers, Mark.

 

[nickpark]

I actually only setup the Exchange side. A consultant setup the Domino part. However, sharing a domain name proved difficult.

We ended up adding a Foreign SMTP Domain for *.* with Destination Server set to our Exchange server ip address.

We have Relay host for messages leaving the local internet domain blank - although it was previously, anyway... Domino routed to the internet some other way.

However, this setup isnt ideal - the first.last@exchange.domain.com setup requirement i spoke about earlier.

 

[MarkhP]

Thanks for your feedback. I have some testing to do I guess. The merger is not for a couple of months so I have a 'bit' of time yet.

I think I will ask a similar question on the Exchange Forum just in case someone else can offer addition tips.

Thanks again.

 

[nickpark]

I can help more on the Exchange side.

http://support.microsoft.com/kb/321721/en-us/