Use curl to follow redirects, inspect the final URL, measure DNS/TLS/TTFB timing, and spot redirect loops or slow origin responses.
See Headers Only From Command Line CURL
To See headers only and not the HTML response from a web server, you can use the command line CURL program to do it. Output
How To Easily Parse Incoming Emails From Postfix
Step 1: Postfix Config I’m going to assume you have postfix and your domain dns already setup. Adding an incoming email that you can parse
