| Outbound SMTP failover [message #149848] |
Mon, 07 June 2021 20:12  |
ikheetleon
Messages: 31
Registered: January 2008
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I'm searching how I can use an outbound failover SMTP relay in Kerio.
Kerio is placed in the internal network. In the DMZ's, there are two Antivirus/Antispam/Routing/Security SMTP appliances. For inbound traffic both appliances can be used (from the internet) based on the MX records. They both deliver to Kerio which works fine. For outbound SMTP however, I need to have all mail go through the same appliances. For many other mail products I'm using the option to use specific MX records for outbound SMTP delivery. But in Kerio I don't seem to have that option. Only option is to deliver based on MX records (that would need direct outbound SMTP access to the internet, which is not possible) or specify a SMTP relay host (which I have now). But how can I add a failover SMTP relay host in case the primary fails?
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