True, but it’s only the sending emails and I don’t have to worry about getting my ISP to set PTR records just to pass spam filters. Your domain’s MX records still point to your server.

Oracle Cloud has their Email Delivery service, which is basically just a straight SMTP proxy, and it’s free. I believe proxies still need to be configured as a sender in SPF and have their own DKIM signing key, but Oracle will still send without them, although wildcard senders will require them.

Usually if they’re all managed switches, you can look at the MAC table and map things out that way.

For Australians, CallTrace seems pretty good, it’s one of the neat uses of LLMs where it will call numbers up and ask what business they are from. Plus I find it hilarious when 2 AIs start talking to each other.