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Load Balancing Web Mail (HTTPS traffic)

Truong Tuan

Hi all,

I hope anyone will support me with this case. I have a diagrams with exchange server 2016 and sophos :  2 Exchange Server (Mailbox01 & 02 )--> Sophos UTM --> Firewall draytek

In sophos UTM is SMTP security. And now, I want to configure load balancing web mail exchange 2016. As research, sophos UTM has a features " Server Load Balancing". I had configure but can't access to Exchange Server webmail. In my understanding, virtual server is IP of sophos and NAT ip sophos with port 443 through Draytek. So , I configured as above , right ? and Should I create a rule on sophos ? Please help and advise me .Thanks in advance. My English is not good to display. 

CHA-EX01 : 10.84.0.18/24

CHA-EX02: 10.84.0.19/24

Sophos in DMZ zone : 10.84.5.4/27.

 



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    Hi There, Are you going to receive the traffic for the exchange server on your DMZ-eth0 Interface? In Virtual Server, you should mention the Address where you expect the request traffic to come. Also, make sure that you have configured proper DNAT rule on your upstream Draytek.

    Regards

    Jaydeep

  • 0 in reply to Jaydeep

    Hi Jaydeep,

    Thanks for your reply. Yes, DMZ-eth0 interface receives the traffic for exchange (out and in). Sophos is mail gateway. I also configured rule NAT port 443 on Draytek with IP internal : 10.84.5.4 that is IP of sophos and IP external : 113.176.95.211. Additionally, I check port 443 with external IP , it still close. Should I create a rule on sophos UTM ?

    Any advice for me.

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  • 0 in reply to Jaydeep

    Hi Jaydeep,

    Thanks for your reply. Yes, DMZ-eth0 interface receives the traffic for exchange (out and in). Sophos is mail gateway. I also configured rule NAT port 443 on Draytek with IP internal : 10.84.5.4 that is IP of sophos and IP external : 113.176.95.211. Additionally, I check port 443 with external IP , it still close. Should I create a rule on sophos UTM ?

    Any advice for me.

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