Is there any way to catch errors on a forwarded route? I have a few SIP codes that are forwarded to other machines using rewritehostport. Once in a while, those machines will be down or doing something odd, and I'll get a 404 response from them. Is there any way for SER to catch/handle those returns? I've been playing around with the onreply_route, but I'm getting weird errors, so I thought I'd see if I was headed in the right direction before I go through the hassle of figuring out why I'm getting things in the log like: ERROR: w_t_relay_to: unsupported mode: 2 and such. N.