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Using TMG as a host for mail marshal

Answered Using TMG as a host for mail marshal

  • Thursday, August 23, 2012 10:02 PM
     
     
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    Hi everyone I realy hope someone can guide me in the right direction...  Sorry if this has been discussed.. First some network settings and layout..

    Internal Network: 192.168.1.0/24

    External Network: 41.19x.xxx.xxx/29 on tmg nic2 (internet)

    Exchange 2010 Server: 192.168.1.22

    Mail Marshal: 192.168.1.32

    RRAS server 2003 3x nics: 192.168.1.27... default gateway of all servers and workstations, DHCP server, routing server for separate MLPS network, with internet breakout.

    Forefront TMG 2010 with Edge Server    Nic1: 192.168.1.254 (internal)

                                                                                    Nic2:41.19x.xxx.xxx (external)

    Receiving emails works fine. see below

    External domain (yahoo.com) à Forefront TMG à Mailmarshal à exchange 2010 à client..

    But when sending out my emails things get interesting

     When sending email

    Client à Exchange 2010 à Mail Marshal à RRAS Server à external domain

    When I change the default gateway of mailmarshal server to the tmg server the emails fail (undeliverable in mail marshal)

    How do I allow tmg to accept emails from my mail marshal server and fw it out to the internet.. Like graph below..

    Client à Exchange 2010 à Mail Marshal à Forefront tmg à external domain (yahoo.com)

    Thanks for all your replies in advanced

    PS

    Sorry for asking a stupid question…

     

All Replies

  • Friday, August 24, 2012 4:23 AM
     
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    Hi,

    create a Firewall Poliy rule which allows the protocol SMTP from the Mail Marshall Server to EXTERNAL for ALL USERS. The Mail Marshall Server must be a SecureNAT Client

    regards Marc Grote aka Jens Baier - www.it-training-grote.de - www.forefront-tmg.de - www.nt-faq.de

    • Marked As Answer by Dirk Mare Friday, August 24, 2012 7:10 AM
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  • Friday, August 24, 2012 6:09 AM
     
     
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    Hi Marc 

    Thanks for your quick reply.. I will try that and post back as soon as possible..

    Dont you think it would be better instead of using default gateway.. to use the Relay option within Mail Marshal Configurator? Or is it the same thing?

    Thanks

     
  • Friday, August 24, 2012 7:11 AM
     
     
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    THANKS Marc

    I'm looking for reward with beers button but I cant find it.


    • Edited by Dirk Mare Friday, August 24, 2012 7:12 AM
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  • Friday, August 24, 2012 7:45 AM
     
     
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    Hi,

    because Mail Marshal relays Mail to the Internet via DNS MX records and not to a special relay server (TMG is only a Mail relay if you install the email protection feature) you cannot use the Mail relay option in Mail Marshal?!

    regards Marc Grote aka Jens Baier - www.it-training-grote.de - www.forefront-tmg.de - www.nt-faq.de