Sorry if I repeat a well known fact.
Please confirm that this is right! One ASA with two ISP can only use one ISP connection at the time. With tracking I can fail over to the other ISP. But I cannot send and receive my SMTP traffic through one and use the other one for all other traffic. Right. ... well there are cheaper products that achieve more...
access-list interna_nat_static extended permit tcp host mail-server eq smtp any
global (Interface_TDM) 1 interface
global (interface_ADSL) 1 interface
nat (interna) 1 192.168.0.0 255.255.255.0
static (interna,Interface_TDM) tcp interface smtp access-list interna_nat_static
access-group interna_access_in in interface interna
access-group Interface_TDM_access_in in interface Interface_TDM
access-group interface_ADSL_access_in in interface interface_ADSL
route interface_ADSL 0.0.0.0 0.0.0.0 ADSLmodem 1
route Interface_TDM 0.0.0.0 0.0.0.0 TDM_router 2
In my case the bold rule is not working as long the the default route is pointing to the interface_ADSL.
Any chance to get that scenario working? (without an extra router...)
It was for me very unexpected that the ASA cant do this.