SMTP Banner
NetworkConnect to a mail server and read its SMTP banner — mostly an IPv4 story.
Use this from the command line
curl 'https://ipcow.com/api/probe/smtp?host=gmail-smtp-in.l.google.com&port=25'Connect to a mail server and read its SMTP banner — mostly an IPv4 story.
curl 'https://ipcow.com/api/probe/smtp?host=gmail-smtp-in.l.google.com&port=25'