Re: ISP Email forward to a non-routable local domain

From: Lanwench [MVP - Exchange] (lanwench_at_heybuddy.donotsendme.unsolicitedmail.atyahoo.com)
Date: 08/25/04 

Date: Wed, 25 Aug 2004 09:33:07 -0400

SuperGumby [SBS MVP] wrote:
> EASY.
>
> Let your ISP handle company.com and create a dyndns account. Forward
> from the ISP to user@dyndnsdomain.whatever and configure Exchange to
> handle mail for (as primary) company.com and also
> dyndnsdomain.whatever.

Actually - not necessary. If you use dyndns or another dynamic dns host, all
you have to do is set up your recipient policy to handle mail for your
Internet domain, make sure all mailboxes are stamped with the right
addresses (as default) and then set your domain's primary MX record to
mycompany.dyndns.org or whatever you chose. No email addresses on other
domains are necessary. The software service you run on your server (if your
router can't handle a dynamic DNS account update, which some can) updates
mycompany.dyndns.org to the correct IP.

<writing from a network set up just this way!>

>
> Your users sending mail will appear as company.com addresses and
> their mail will return to the ISP mailbox where it will be copied to
> their exch mailbox at the dyndnsdomain.whatever address.
>
> "covisor_dan" <covisordan@discussions.microsoft.com> wrote in message
> news:BCF91B32-DB78-4CD5-B6D9-42D3C701D4EC@microsoft.com...
>> The email is currently properly configured and the CEICW I don't
>> think addresses the issue. The issue has to deal with using a local
>> domain. Everything I read said that it is best to setup SBS with a
>> local domain for
>> security reasons. However, the .local domain is not routable on the
>> internet. If I could route a .local address the answer would be
>> easy. Setup an alias (office.company.local) and point it to
>> company.local. However, this won't route on the internet. This means
>> that nonone on the internet can send an email on the internet with
>> user@company.local because it
>> will not route. The request to keep the webmail (from the ISP)
>> came from the owner of the company so I have to respect that. I
>> have found a way to forward the emails but to a different internet
>> domain (office.company.com).
>> What I need to know is how to I setup Exchange or DNS to translate
>> the incoming email address (user@office.company.com) to a valid
>> exchange user account (user@company.local).
>>
>> Thanks for your help! I know this is a bit different.
>>
>>
>>
>> "Marina Roos [SBS-MVP]" wrote:
>>
>>> Hi,
>>>
>>> Just run the CEICW wizard and enable Exchange for internet mail.
>>> This will
>>> setup your users with the proper email domain name addy.
>>>
>>> --
>>> Regards,
>>>
>>> Marina
>>> Microsoft SBS-MVP
>>>
>>> "covisor_dan" <covisordan@discussions.microsoft.com> schreef in
>>> bericht news:00CFA2EF-FFBD-4B7C-A48A-236BF071F1D9@microsoft.com...
>>>> Have a situation where we want to forward email from ISP email
>>>> accounts
>>> to
>>>> the local Exchange server setup in SBS2003. The company wants
>>>> their email
>>> to
>>>> appear right away in the email boxes (exchange) without losing the
>>>> ability
>>> to
>>>> use the ISP's webmail interface in case the Exchange server is
>>>> down. The
>>> ISP
>>>> has the ability to forward the email to any valid email address.
>>>> Unfortunately the local domain was setup as a non-routable domain
>>>> (like company.local instead of company.com).
>>>>
>>>> Here's the backgroup scoop:
>>>> local domain: company.local
>>>>
>>>> ISP:
>>>> Public Internet Domain: company.com
>>>> email address: someone@company.com
>>>>
>>>> DNS Record setup at ISP: office.company.com which points to the
>>>> static IP
>>>> address of the local exchange server.
>>>>
>>>> I think what we want to do is forward each email address to
>>>> someone@office.company.com which will forward the email to the
>>>> local server address.
>>>>
>>>> The problem is how do I setup an alias so that the server will
>>>> receive someone@office.company.com and know to translate to
>>>> someone@company.local.
>>>> and send to the appropriate exchange email box. Is this possible?
>>>>
>>>> Thanks!

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