Howdy, I'm thinking that for my personal mail server I would like to stop showing the world the IP that I'm sending email from, for various reasons, but mostly privacy.
I see lots of sketchy options out there using header checks, but I'd ideally like to not just strip out the first received line, but also replace it with something else (for example, generate some random gibberish hostname under my domain and save that to a log or db so I can look up the IP later if needed for other users of the server. This feels like something someone might have already done as a filter, but I'm not seeing anything out there yet. I'm also not sure if the various header replacement options using regexes I've seen are going to mess up my DKIM signing. Any pointers on what direction to go with this? Thanks, Charles
