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Routing Exchange 2013 email to 3rd parties via VPN

    Question

  • Hi all;

    By default, I am using the default send connector to route all email from Exchange 2013 to all email recipients via internet.  Due to business requirement, I have a site to site vpn link with a 3rd parties company for some kind of resources exchange.  Let's say my 3rd parties business partner email domain is mail.3rdpartner.com, instead of sending the email over internet, I am thinking how possible to route the email to this email domain by a second Send Connector, in this case; all email for them is sent via the VPN link, not instead.

    Subject to my information, my business partner is using Exchange 2010.  My thinking is, I need the MX record of their exchange server and put it into my DNS server, this is the first step to do.  And configure the Send Connector to look up this DNS entry if email is for this email domain.

    Please let me know if this is correct if anyone know how to do or you have same experience before, and what other setup need consider in my plan?

    thanks!


    KW - CNE,MCSE,VCP5

    Wednesday, December 7, 2016 6:04 AM

Answers

  • Hi

    Create a new custom send connector with smarthost IP. It's the easyest way for me
    In this new send connector, instead of "*" in the address space, specify the smtp domain name of your partner. This will ensure all email sent to this smtp domain to be routed through this send connector.

    But you can choose "partner" and MX if you prefer, it's the same

    • Marked as answer by KANE W Saturday, February 25, 2017 5:03 PM
    Friday, December 9, 2016 7:52 PM

All replies

  • Hi 

    Your right, you'll need a new Send Connector.

    Using a MX record and do the look up in your DNS is a good idea, but you can also configure directly the IP address of your partner mail server in this new send connector.

    Wednesday, December 7, 2016 8:06 AM
  • thanks!  with direct IP address in the new send connector, do I need a MX record to support too?

    KW - CNE,MCSE,VCP5

    Thursday, December 8, 2016 7:36 AM
  • no, it's not necessary.


    Thursday, December 8, 2016 7:57 AM
  • Hi,

    It’s recommended to use second send connector with the proper address space(IP address of your partner).

    Please post back if you need further assistance or have any results.


    Regards,

    Jason Chao


    Please remember to mark the replies as answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Thursday, December 8, 2016 8:51 AM
    Moderator
  • thanks for your answer in advance.

    I want to confirm..

    1) I have a current Send Connector with the address space "*" configured, if I add a second new Send Connector for my 3rd party, how can I make sure the outbound email always uses this Send Connector?  Do I need to assign a higher priority cost for this new connector and assign a lower priority cost for the current connector?

    2) There are four types of Send Connector can be chosen... (i) Custom.. (ii) Internal... (iii) Internet... (iv) Partner...

    Can I select "Partner" and configure what is the MX record of my partner email server in my local DNS, would it be simple than using SmartHost?


    KW - CNE,MCSE,VCP5

    Friday, December 9, 2016 7:08 PM
  • Hi

    Create a new custom send connector with smarthost IP. It's the easyest way for me
    In this new send connector, instead of "*" in the address space, specify the smtp domain name of your partner. This will ensure all email sent to this smtp domain to be routed through this send connector.

    But you can choose "partner" and MX if you prefer, it's the same

    • Marked as answer by KANE W Saturday, February 25, 2017 5:03 PM
    Friday, December 9, 2016 7:52 PM