Posted inWeb application security
Test SMTP Authentication and StartTLS
Investigate SMTP authentication issues like a boss! Particular over TLS encrypted SMTP connections, it's always handy if you are able to test the SMTP authentication and StartTLS connection. Preferably from your command line. This post shows you how to test SMTP servers, create base64 encoded logon information, verify SMTP authentication over an opportunistic TLS connection, all from the Linux and Windows command line using OpenSSL.