dear all, please help, i'm using 2 providers : provider A (priority) & provider B i'm using feature : uplink balance to keep my internet up. its work good. the problem is i need to manual switch on or off "SNAT" if Provider A down to make smtp server work. example: if provider A down. i need to switch off Provider A's SNAT backend exchange server and turn on Provider B's SNAT. i have no problems for receiving email with both DNAT on. did i miss something in setup. i'm using Astaro utm425. thanks all, Gunung
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