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How do I change my SMTP from old.co.uk to new.co.uk

Posted on 2006-03-25
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Last Modified: 2010-04-19
I have been using SBS 2003 for my small business over a year now the system consists of 1 x SBS 3003 4 PCs all running XP Pro there is also 4 printers.  Emails are connected via an ISP Broadband (2mb) and my web site is hosted by a coldfusion MX hosting company.

All emails have been set up on the clients PCs through Microsoft Exchange Server - “glen01.Glenfields.local”, in the SBS a POP3 Mailbox for each client as

E-Mail server = mail6.#########.ext
Port = 110
User name = name @glenfields.co.uk
Password = ############
Mailbox type = User Mailbox
Exchange mailbox = name of the client e.g. (JohnH)

I now need to move from glenfields.co.uk to dht-associates.co.uk for all emails the ISP and the hosting companies are the same even the E-Mail server = mail6.#########.ext is the the same.

I have tried to change the POP3 and have received emails, however I also got bounced back when sending out, I have renames the User Name in POP3 from name@glenfields.co.uk to name@dht-associates.co.uk.
 
Cant I change the wed/email domain name through my SBS 2003 server, should I run the “Connect to the Internet” wizard again from the To Do List as I think it reconfigures the Emails.

John Hollings
In despair
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Question by:john_hollings
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by:vico1
ID: 16288169
that seems to be your best bet,

Go to server management run connect to the internet wizard again
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by:john_hollings
ID: 16288690
Thanks vico1, I have been putting off that, but I test the waters so to speck, and got a message stating that I had to set a staic IP address for the local network adapter is that any one? such as 192.168.0.#
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by:vico1
ID: 16289079
No not any one, that would be the one where all your local computers are.

You could use network 192.168.0.0 for the internal
and if you are connected to a router you could use network 192.168.1.0 that would work fine.

the key is the external and the internal nic have to be on different subnet for routing and many other reasons.
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by:Jeffrey Kane - TechSoEasy
ID: 16291814
John,

There is certainly NO problem in running the CEICW (configure email and internet connection wizard) as MANY times as you like.  It won't hurt to do so.  AND... if you want to revert to a previous setting it saves all of them in :
C:\Program Files\Microsoft Windows Small Business Server\Networking\ICW which you can rerun as a Visual Basic script right from that folder (although this is just a safety measure... I don't think I've ever seen anyone actually revert to one of these... it's easier to just see what the settings were and rerun the wizard).

There is a screen in the wizard which asks your Email domain name -- which, of course does not have to match your internal domain or any other domain name for that matter... it's whatever you put... you will then be taken to the POP3 connector screen to make the account changes there.

Jeff
TechSoEasy
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by:heathcote123
ID: 16309241
If your server is already running OK with internet connectivity, working email etc, then there doesnt seem to be a lot of point in starting fiddling around with IP addresses & routing - may as well just tackle the question in point.

To set the default email domain, you could go to exchange system manager>recipents>recipient polices>properties of default policy>email addresses>new smtp address>@dht-associates.co.uk

You'll be asked if you want exchange to update the recipients, saying yes will update their email addresses.

Set this as the default email address if this is what you want clients to send out as. Exchange should update all the recipients email addresses - check this after 15 minutes.

If you are using your ISP's mail server to send out, and they are bouncing them, you need to find out why they are bouncing them (post a bounce here, or ask your isp), or configure exchange to send out via DNS rather than through a smart-host (ie your isps mail server) This latter option can though cause problems later down the line as some over-zealous spam filters only like mail being delivered from 'recognised' mail servers, not adsl ranges.
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by:Jeffrey Kane - TechSoEasy
ID: 16309592
It's important to clarify that running the CEICW DOES NOT fiddle around with IP addresses & routing if you select "Do Not Change" on those particular screens.  I always recommend AGAINST editing these things manually because the wizards ensure that the configuration won't conflict with other server roles and services that are on the same SBS box.

Please also note that heathcote123's recommendation would NOT be applicable at all in this scenario because this situation as described does not use Exchange SMTP mail, but rather the POP3 Connector that's part of SBS.

Jeff
TechSoEasy
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by:heathcote123
ID: 16309789

Surely the pop3 connector is only for inbound mail - and is the problem not outbound mail  (SMTP) getting bounced?

I think we need to clarify the issue here - John - have your ISP assigned you new user names & passwords for the pop boxes on the new domain? and they are working, yes?

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by:Jeffrey Kane - TechSoEasy
ID: 16309822
True that the POP3 connector only handles inbound mail.  But you made a recommendation to alter the RECIPIENT policies which are for inbound mail as well... but not for POP3 retreival.

The problem most likely has to do with the SMTP Virtual Server, which also could be reconfigured manually... however, there is no reason to do so because the CEICW will do it correctly.

Jeff
TechSoEasy
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by:heathcote123
ID: 16309891
Altering the default email address in recipient polices will define what the 'sent' address appears as when the client sends it. You can do this through policy, or through seperate accounts in ADU&C , either way, it will need to be done so that the emails appear to be coming from the new address, not from the old one.

It will not affect in any what is coming inbound, as the pop3 connector delivers to whichever mailbox you select - doesnt matter what the domain is.



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by:Jeffrey Kane - TechSoEasy
ID: 16310140
Look, I'm not really trying to argue the point of what is or isn't done when you manually configure something on an SBS machine.  What I am trying to stress is that the wizards generally do more than the individual task and that's a GOOD thing... in this case, for instance, the CEICW ensures that the SMTP Virtual Server is configured to prevent Exchange from excessive usage of network bandwidth, and also to ensure that it is closed to relaying (even though they use POP3, that possibility could exist if the firewall isn't configured correctly).

Moreover, NOT using the wizards can cause serious problems in an SBS because of the interdependency of many of the services and roles.  It's just bad practice to circumvent them.  For more info on this, refer to http://sbsurl.com/itpro.

Jeff
TechSoEasy
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by:john_hollings
ID: 16323069
Thanks to you all for the input (aruging aside), I think I have fixed it.

1. As my Email host servicer has remained the smaeone.

2. I made a connection form the Email Account on all client PCs to Exchange Server

3. Exchange Server POP3 only has one (1) Email Server to chack (the ISP email server)

4. Each Users account on the SBS has their own SMTP email name, infact mine has 6 email accounts . e.g johnh@dht-associates.co.uk, webmaster@dht-associates.co.uk etc...

5. The Exchange Server sorts out the in/out email as needed.

Well it works, thanks again

John
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by:Jeffrey Kane - TechSoEasy
ID: 16324987
No problem... the "arguments" or debates as I prefer to look at them, are generally a good learning experience for all of us!  :-)

Glad that you did configure a General Mailbox from the ISP, this is really the best way to use the POP3 connector.  FYI, Outlook should automatically get configured for each user... you really shouldn't have to do that.  If that behavior isn't happening you should check into how the workstations were originally added to your network to be sure that it was done properly.  This can affect a number of other items that make network management easier on an SBS.

Jeff
TechSoEasy
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