SMTP Routes, DNS and Failover

[quentinperceval]

Hi !

I'm configuring an outgoing server (i.e. only a private listener) on ESA C370 with AsyncOS 8.0.1.

I use the Internet's Root DNS Servers, and my default SMTP route is empty. My ESA is connected to 3 networks : production (default gateway), administration and failover (1 interface/network).

I would like to deploy a failover solution with an extra ESA on the failover network : if I lose my internet connection (impossible to join DNS and remote MX), my ESA would redirect all its mails to the extra ESA.

How can I do that ?

Thank you for your help.

Best Regards

Quentin

[Jacqueline Fleming]

The ESA has no way to automatically fallback to a static IP if DNS in unreachable.  The best on-box solution I can suggest is manually changing the 'All Other Domains' SMTP Routes entry when such an event occurs.

I hope this helps!

- Jackie