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  1. #1
    Platinum Lounger
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    Additional email domain

    <P ID="edit" class=small>(Edited by JohnGray on 12-Oct-06 13:46. can't get √ to work!)</P>We have an Exchange 2003 server, which handles emails addressed to <usernames>@olddomain.org.uk

    We now wish it to handle, in addition, emails addressed to <usernames>@newdomain.org.uk (this will eventually take over from olddomain when everything is working properly).

    Both domains are hosted by a UK hosting company, which provide the DNS which points the MX "A" records for both these domains to our external fixed IP address. No idea if this is the 'approved' way, but that's what happens and it works on olddomain.org.uk.

    To get both email domains to 'work' I understand that I have to modify the Recipient Policies -> Default Policy
    which used to read
    [tick] SMTP @olddomain.org.uk
    [tick] X400 c=GB;a= ;p=ourdnsdomain;o=Exchange;
    and now reads
    [tick] SMTP @newdomain.org.uk
    [tick] SMTP @olddomain.org.uk
    [tick] X400 c=GB;a= ;p=ourdnsdomain;o=Exchange;

    I don't have a problem with SENDING emails from our organisation with a newdomain.org.uk email address (provided I remember to change the Primary email address in my user entry in Active Directory!).

    But all external emails addressed to defined email address at newdomain.org.uk all get returned by the Postmaster of olddomain.org.uk with a 5.7.1 Non Delivery report. Here is an example:<pre>The sender program at:
    newdomain.org.uk
    could not deliver the message with subject:
    External email sent to me@newdomain.org,uk
    originally addressed to:
    me@newdomain.org.uk,
    for this reason:
    Error: delivery failed
    me@newdomain.org.uk - Permanent Failure: 550 5.7.1 Unable to relay for me@newdomain.org.uk</pre>

    Has anyone any ideas where I might go from here? I'm afraid I have had Exchange systems administration thrust upon me...!

    Thanks

    John
    <font face="Script MT Bold"><font color=blue><big><big>John</big></big></font color=blue></font face=script>

    Ita, esto, quidcumque...

  2. #2
    Plutonium Lounger Leif's Avatar
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    Re: Additional email domain

    This looks like it is a relaying issue - normally disabled for obvious reasons.

    Does this TechNet article shed any light?

  3. #3
    Platinum Lounger
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    Re: Additional email domain

    Thanks, Leif.

    Relaying (or not relaying!) is clearly the key. But they seem to change Exchange Server somewhat every few years so that 2003 is different from 2000 and from 5.5.

    I'll have a read of the article shortly.

    I can add a little other information, that on the server's console, if you do a TELNET session you get the following:<pre>TELNET 127.0.0.1 2500
    220 fileserver.dnsdomain.COM Microsoft ESMTP MAIL Service, Version: 6.0.3790.1830
    ready at Wed, 11 Oct 2006 14:34:11 +0100

    HELO
    250 fileserver.dnsdomain.COM Hello [127.0.0.1]

    MAIL FROM:me@newdomain.org.uk
    250 2.1.0 me@newdomain.org.uk....Sender OK

    RCPT TO:me@newdomain.org.uk
    550 5.7.1 Unable to relay for me@newdomain.org.uk

    QUIT
    221 2.0.0 fileserver.dsndomain.COM Service closing transmission channel</pre>

    Don't know whether that is of any use!

    John
    <font face="Script MT Bold"><font color=blue><big><big>John</big></big></font color=blue></font face=script>

    Ita, esto, quidcumque...

  4. #4
    Plutonium Lounger Leif's Avatar
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    Re: Additional email domain

    Hmmm. This other article may help, but it's a bit beyond my personal experience. In our mail server, I can set up secondary domains and it treats all these as 'local'. (A word of warning - I accidentally set our server to allow relaying a year or two back and our ISP blocked us within five minutes!)

  5. #5
    Platinum Lounger
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    Re: Additional email domain

    Thanks - I have a lot of reading on my day off. To add to your articles I have an 11-page one: "Hosting Multiple SMTP Domains on Exchange 2000".

    As always, it was supposed to be so easy. Just set up the default Recipient Policy for the new domain, add a few corresponding IP addresses for users, and Mabel's your Auntie!

    John

    PS You're clearly not with the same ISP as me, since the entire blueyonder address space (hundreds of thousands of IP addresses) has been blacklisted...
    <font face="Script MT Bold"><font color=blue><big><big>John</big></big></font color=blue></font face=script>

    Ita, esto, quidcumque...

  6. #6
    Platinum Lounger
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    Re: Additional email domain

    I am pleased/immensely frustrated to report that after a reboot of the Exchange server this morning and the ticking of a box:

    Recipients -> Recipient Policies -> Default Policy -> Email Addresses (Policies)
    [tick] SMTP @newdomain.org.uk
    -> Edit
    [tick] This Exchange Organization is responsible for all mail delivery to this address.
    (no, I have no idea what it means, and the Help information simply repeats the message)

    incoming emails to <whosoever>@newdomain.co.uk now get delivered successfully!

    I have no idea why it didn't work before, because that box has been ticked (and unticked!) several times, so maybe it was the reboot...

    Thanks, Leif, for your help.

    John
    <font face="Script MT Bold"><font color=blue><big><big>John</big></big></font color=blue></font face=script>

    Ita, esto, quidcumque...

  7. #7
    Plutonium Lounger Leif's Avatar
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    Re: Additional email domain

    I am pleased to hear it, but am unable to help with your frustration <img src=/S/laugh.gif border=0 alt=laugh width=15 height=15>

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