Deploy Sophos Central Email Security with two mail servers

Question

Hello everyone, 
 I have had the opportunity to implement Sophos Central Email Security in Mailflow and Gateway mode, always using only 1 mail server in office365 and exchange. However, I wonder how the implementation would be if I had a client who uses zimbra and also exchange or office365? 
 Thanks

Tom Foucha · Answer

It really isn't that complicated. Mail servers deliver messages via Host Records and MX records, so essentially in gateway mode you configure in your DNS record 
 mail.example.com 
 MX 10 zimbra.example.com 
 MX 10 exchange.example.com 
 Now with this you won't know which server will get the incoming email. You could optionally change the weight for one server to say 100 and that would mean messages would go to the server with the setting of 10 unless it wasn't available. In the mail host below set mail.example.com and DNS will sort out the rest. In the below example I'm delivering everything to domain-mail.protection.outlook.com 
 cemapm.com mail is handled by 10 mx-01-us-west-2.prod.hydra.sophos.com. 
 cemapm.com mail is handled by 10 mx-02-us-west-2.prod.hydra.sophos.com. 
 cemapm.com mail is handled by 100 cemapm-com.mail.protection.outlook.com. 
 
 If I were going to deliver in a Hybrid fashion I would recommend deliver to the cloud and then have the cloud deliver to the on-premise mailboxes. 
 Hope this helps.

Erick Jan · Answer

Hi Gerardo, 
 Thank you for reaching out to Sophos Community. 
 I recommend contacting your Sophos Sales/AM for this kind of query to consider all the necessary information for your environment.

Deploy Sophos Central Email Security with two mail servers

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