mta receive maximum-recipients 0 ! ! ! ! interface Ethernet0/0 ip address 172.16.172.35 255.255.255.240 half-duplex crypto map vpn ! interface Ethernet0/1 ip address 192.168.4.1 255.255.255.0 half-duplex ! interface Serial1/0 no ip address shutdown ! interface Serial1/1 no ip address sh...