We are trying to connect to email server using express-mailer(^0.3.1), we have configured this email server at many places but at one of the client we not able to connect, getting below error.

error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol

Is it because of different SSL version? As they might be using different version of SSL which express-mailer does not support. We have tested this with SSLv3, TLS 1.0, TLS 1.1, TLS 1.2 which is working fine.

We have tried below configuration as well:

  • Host: private IP address (e.g.

  • Port: 25

  • Security: We have checked TRUE (but have tried both)

  • Username: valid user name

  • PW: Corresponding password

  • Method: We have left empty (default of SMTP). However we have also tried specifying SMPT and Sendmail.

0 Answers