Email setting (v-8.4.2)

Hi, After following the ‘Install & Configure the SMTP Email Module’ (, found below Error when try to send test mail.  “unable to find valid certification path to requested target” How can I fix the issue? Would appreciate to receive any pointers.   Note:  Tested by running both on locally and sandbox environment - SMTP Server: Using our own Mail server - Port: TLS (587) Imported modules: - E-mail module with templates  - Mx Model Reflection - Encryption   Regards, Sabbir    
1 answers

It is a problem with validating a certificate and you might need to upload a certificate like in this question:

Or maybe it is a blocked port like this question: