I'm trying to troubleshoot my postfix so I decided to route its traffic to my isp smtp relay trough a netcat relay:
nc -l <someport> 0<backpipe | nc <isp-smtp> 26 | tee backpipe
And I configured my postfix to connect to localhost:. But to get the netcat relay working it needs a FIFO pipe made with mknod backpipe p
and apparently this is not supported on OS X.
Is there an alternative way to either set up a TCP relay I can monitor, or something else I can use to watch the chit-chat between postfix and my isp smtp?