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Verity Exchange HA diagram
Dear Wizards, we intent to setup the second Exchange mail server 2016, to form a HA diagram. Then configure the public IP addresses from different ISPs to these 2 Mail servers; so that when 1 ISP fails, we got the other ISP to backup mail service.
Example: MX1 and MX2 to form HA DAG to synchronize emails.
MX1 has public IP from ISP1
MX2 has public IP from ISP2
dafault MX record of domain company.com is IP of ISP1; when ISP1 fails, we will map MX record to IP of ISP2
Is this possible? can you suggest pros and cons? Many thanks!
Example: MX1 and MX2 to form HA DAG to synchronize emails.
MX1 has public IP from ISP1
MX2 has public IP from ISP2
dafault MX record of domain company.com is IP of ISP1; when ISP1 fails, we will map MX record to IP of ISP2
Is this possible? can you suggest pros and cons? Many thanks!
This is possible and there are no issues with that setup. there are no cons in this regard. just be sure you setup a witness server for quorum. you are good on that diagram.
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You can setup bi-directional mail flow through two ISP for a single Exchange server, if you wish. It involves possibly more complicated networking, but you don't NEED two Exchange servers. That said, having multiple Exchange servers has various benefits (and costs) itself, so I wouldn't tell you not to implement multiple Exchange servers.