An error occurred while sending mail (SSL_connect returned=1 errno=0 state=SSLv2/v3 read server hello A: unknown protocol)

See more:

Ruby

configuration.yml

development:
  email_delivery:
    delivery_method: :smtp
    smtp_settings:
     #tls: true
      #enable_starttls_auto: true
      openssl_verify_mode: 'none'
      address: "domain name"
      port: 25
      authentication: :login
      domain: 'mail domail name'
      user_name: 'mail id'
      password: 'pwd'

this code use to for the following error occurs

An error occurred while sending mail (SSL_connect returned=1 errno=0 state=SSLv2/v3 read server hello A: unknown protocol)

--------------------------------------------------------------------------------

 development:
   email_delivery:
     delivery_method: :smtp
     smtp_settings:
#       tls: true
#       enable_starttls_auto: true
       openssl_verify_mode: 'none'
       address: "domain name"
       port: 587
       authentication: :login
       domain: 'mail domail name'
       user_name: 'mail id'
       password: 'pwd'

this code use to for the following error occurs

An error occurred while sending mail (No connection could be made because the target machine actively refused it. - connect(2))

------------------------------------------------------------------------------------------------------------------

 development:
   email_delivery:
     delivery_method: :async_smtp
     smtp_settings:
#       tls: true
#       enable_starttls_auto: true
       openssl_verify_mode: 'none'
       address: "domain name"
       port: 25
       authentication: :login
       domain: 'mail domail name'
       user_name: 'mail id'
       password: 'pwd'

no error occurs but still not received mail on the user.
--------------------------------------------------------------

development:
   email_delivery:
     delivery_method: :smtp
     smtp_settings:
#       tls: true
#       enable_starttls_auto: true
       openssl_verify_mode: 'none'
       address: "domain name"
       port: 25
       authentication: :login
       domain: 'mail domail name'
       user_name: 'mail id'
       password: 'pwd'

this code to use redmine version 2.2.3 to use work with fine. but version 2.3.0 to use not working now.


please help me am two day search not solve this problems.