Testing SMTP server
Depends on the SMTP protocol Way to test: 1. For SMTP, Using telnet to send SMTP command and payload to the server 2. For SMTP/tls or SMTPS, require to use openssl s_client ref: https://qmail.jms1.net/test-auth.shtml
Depends on the SMTP protocol Way to test: 1. For SMTP, Using telnet to send SMTP command and payload to the server 2. For SMTP/tls or SMTPS, require to use openssl s_client ref: https://qmail.jms1.net/test-auth.shtml