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Routing problem in Coexistance mode
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Routing problem in Coexistance mode - 16.Jul.2008 4:47:40 PM
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pretzeldude
Posts: 12
Joined: 16.Sep.2003
From: Pennsylvania, USA
Status: offline
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Hello - I've just setup my Ex2007 server in coexistance with our legacy Ex2003 server according to the tutorial by Mr. Walther published on this site. The routing groups appear to be created on the Ex2003 server etc. Here's the problem; I can send mail from an account that was moved to the Ex2007 server to mailboxes still on the Ex2003 server and vice-versa - i.e. Internal routing works.
Problem: from the test mailbox that was already moved to the Ex2007 server I cannot send email to the Internet. All messages sent Ex2007>2003>Internet wind up in the Unreachable Domain Queue.
I must have done something wrong or is it not possible to route to the Internet from the moved mailboxes until you decommission the Ex2003 server?
Thanks,
Ted
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RE: Routing problem in Coexistance mode - 17.Jul.2008 9:05:46 AM
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Sembee
Posts: 4093
Joined: 17.Jan.2008
From: Somewhere near London, UK
Status: offline
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Do you have an SMTP connector in ESM on Exchange 2003? If not then you need to. Create it in Exchange 2003 and it will appear as a Send Connector on the Exchange 2007 server. DO NOT create it on the Exchange 2007 server as it could cause problems with email routing for the Exchange 2003 server.
If you do have an SMTP Connector then ensure that there are no restrictions on the SMTP virtual server.
As for "... or is it not possible to route to the Internet from the moved mailboxes until you decommission the Ex2003 server? "
While Microsoft have been known to do some things that everyone else goes "huh?", that kind of restriction would be laughed at. If they did insist on it then it would be heavily documented and would be the top of any list for the migration. Credit Microsoft with some intelligence, they are not going to cripple upgrades of one of their flagship products in that way.
Simon.
_____________________________
Simon Butler,
Exchange MVP
Blog: http://blog.sembee.co.uk/
Web: http://www.amset.info/
In the UK? Hire me: http://www.sembee.co.uk/
Exchange Resources: http://exbpa.com/
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RE: Routing problem in Coexistance mode - 17.Jul.2008 10:08:27 AM
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pretzeldude
Posts: 12
Joined: 16.Sep.2003
From: Pennsylvania, USA
Status: offline
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Simon - thank you for the reply.
No, we don't currently have an SMTP Connector on our Exch2003 - we've always just used the default SMTP Virtual Server.
I'm reading the article on "Configuring an SMTP Connector" by Marc Grote on this site right now. However, even though I need to have mail flow from Exch2007>Internet, I also don't want to disrupt our current Exch2003>Internet traffic.
Are there any other problems or "gotchas" in switching from the VSI to an SMTP Connector on the legacy Exch2003 server?
Thanks again!
Ted
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RE: Routing problem in Coexistence mode - 17.Jul.2008 11:33:31 AM
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Sembee
Posts: 4093
Joined: 17.Jan.2008
From: Somewhere near London, UK
Status: offline
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As far as I am concerned, SMTP connectors are mandatory in Exchange 2007/2003 co-existence. They are not a replacement for the SMTP virtual server, they are a way of controlling the SMTP traffic flow which uses the SMTP virtual server.
Therefore you need to create an SMTP Connector on the Exchange 2003 server. If configured in the default settings with a * as the address space then email will continue to be delivered as it was before for the Exchange 2003 users.
If you have a smart host set on the SMTP virtual server then you must remove it and place it on the SMTP connector.
Once the connector is configured, if you want both servers to send email directly to the internet then you can set both as bridgeheads. However do consider the implications of the Exchange 2007 server sending email - does it have a valid reverse DNS, is it appearing to come from the correct IP address, etc.
Simon.
_____________________________
Simon Butler,
Exchange MVP
Blog: http://blog.sembee.co.uk/
Web: http://www.amset.info/
In the UK? Hire me: http://www.sembee.co.uk/
Exchange Resources: http://exbpa.com/
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RE: Routing problem in Coexistence mode - 28.Jul.2008 12:13:01 PM
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pretzeldude
Posts: 12
Joined: 16.Sep.2003
From: Pennsylvania, USA
Status: offline
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Thanks for the replies. I'm still having some problems.
1) When I try to create the SMTP connector on the Exch2003 box, it won't allow me to choose the DNS option - it keeps popping an error box that says "you must choose a smarthost". (we do not have a smarthost on the VSI).
2) If I do use the smarthost option (using the server name of the Exch2003 box) it will send email, but not with the * as the address space - i have to use our FQDN for it to work.
3) On the Exchange2007 box, I keep getting Event ID 1009 warnings: "There is no active Hub Transport server in the local site". I have installed the Mailbox, Client Access and Hub Transport roles all on the same box (it's a small installation).
I thought that our installation would be fairly simple, but clearly something is amis. Any ideas?
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RE: Routing problem in Coexistence mode - 29.Jul.2008 1:21:18 PM
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Sembee
Posts: 4093
Joined: 17.Jan.2008
From: Somewhere near London, UK
Status: offline
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By putting your own domain in the address space tab that means the SMTP connector is not actually routing any email for foreign domains. The connector is close to useless.
Do you have any other SMTP connectors showing anywhere in ESM?
I haven't seen Exchange state that you must enter a smart host and not allow you to select the DNS option - and I have seen Exchange do some funny things.
I am beginning to think that your Exchange 2007 installation isn't correct. I would suggest that you look at moving the mailboxes that are on that server back to Exchange 2003 and then remove Exchange 2007 using add/remove programs and reinstall it.
Simon.
_____________________________
Simon Butler,
Exchange MVP
Blog: http://blog.sembee.co.uk/
Web: http://www.amset.info/
In the UK? Hire me: http://www.sembee.co.uk/
Exchange Resources: http://exbpa.com/
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RE: Routing problem in Coexistence mode - 29.Jul.2008 1:28:04 PM
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pretzeldude
Posts: 12
Joined: 16.Sep.2003
From: Pennsylvania, USA
Status: offline
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I do not have any other SMTP Connectors showing in ESM. Maybe some of the 3rd Party software on the server is causing the problem. We run Exchange Resource Manager (simpler-webb) and GFI Mail Essentials for Anti-Spam features.
I've only migrated one test mailbox to the 2007 server, so maybe it is time to try a reintstall. I can't figure out why it can't see any Hub Transport servers... all roles are installed on the same box!
Thanks for your input.
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RE: Routing problem in Coexistence mode - 1.Aug.2008 6:03:27 AM
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wildyc
Posts: 6
Joined: 31.Jul.2008
Status: offline
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Just want to share, you may want to take a look on the Exchange 2k3 Default SMTP Virtual Server configuration.
In one of my implementation, routing problem in co-existence period is solved by moving out the configuration from E2k3 Default SMTP Virtual Server to E2k3 SMTP connector.
How to configure the SMTP Connector
http://support.microsoft.com/kb/265293
Hope that help.
Cheers,
Wildy
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