I may have asked this last week, but if I did, I apologise. I have a rewriteuri call in SER. It essentially forwards all the packets to a different IP/port. Sometimes, when calling, everything goes through. Sometimes, that network is congested or confused, and I get a 404. I'm wondering if there's a good, clean way to handle those errors... is there some sort of check status or some such I could use to handle errors from a particular destination to which I forward certain calls? N.