Redmine

Hello and happy new year !
i have a problem when i'm using receive_imap with redmine 2.6 on bitnami ubuntu 12 - ruby 2.0.0p598 - gem 2.3.0
i run this command:

$/opt/bitnami/apps/redmine/htdocs/bundle exec rake -f /opt/bitnami/apps/redmine/htdocs/Rakefile redmine:email:receive_imap RAILS_ENV="production" host=imap.my.compagny username=myuser password=mypassword port=993 ssl=1 --trace

Invoke redmine:email:receive_imap (first_time)
Invoke environment (first_time)
Execute environment
Execute redmine:email:receive_imap
rake aborted!
OpenSSL::SSL::SSLError: SSL_connect returned=1 errno=0 state=SSLv2/v3 read server hello A: sslv3 alert handshake failure
/opt/bitnami/ruby/lib/ruby/2.0.0/net/imap.rb:1454:in `connect'
/opt/bitnami/ruby/lib/ruby/2.0.0/net/imap.rb:1454:in `start_tls_session'
/opt/bitnami/ruby/lib/ruby/2.0.0/net/imap.rb:1047:in `initialize'
/opt/bitnami/apps/redmine/htdocs/lib/redmine/imap.rb:30:in `new'
/opt/bitnami/apps/redmine/htdocs/lib/redmine/imap.rb:30:in `check'
/opt/bitnami/apps/redmine/htdocs/lib/tasks/email.rake:130:in `block (4 levels) in <top (required)>'
/opt/bitnami/apps/redmine/htdocs/app/models/mailer.rb:367:in `with_synched_deliveries'
/opt/bitnami/apps/redmine/htdocs/lib/tasks/email.rake:129:in `block (3 levels) in <top (required)>'
/opt/bitnami/ruby/lib/ruby/gems/2.0.0/gems/rake-10.3.2/lib/rake/task.rb:240:in `call'
/opt/bitnami/ruby/lib/ruby/gems/2.0.0/gems/rake-10.3.2/lib/rake/task.rb:240:in `block in execute'
/opt/bitnami/ruby/lib/ruby/gems/2.0.0/gems/rake-10.3.2/lib/rake/task.rb:235:in `each'
/opt/bitnami/ruby/lib/ruby/gems/2.0.0/gems/rake-10.3.2/lib/rake/task.rb:235:in `execute'
/opt/bitnami/ruby/lib/ruby/gems/2.0.0/gems/rake-10.3.2/lib/rake/task.rb:179:in `block in invoke_with_call_chain'
/opt/bitnami/ruby/lib/ruby/2.0.0/monitor.rb:211:in `mon_synchronize'
/opt/bitnami/ruby/lib/ruby/gems/2.0.0/gems/rake-10.3.2/lib/rake/task.rb:172:in `invoke_with_call_chain'
/opt/bitnami/ruby/lib/ruby/gems/2.0.0/gems/rake-10.3.2/lib/rake/task.rb:165:in `invoke'
/opt/bitnami/ruby/lib/ruby/gems/2.0.0/gems/rake-10.3.2/lib/rake/application.rb:150:in `invoke_task'
/opt/bitnami/ruby/lib/ruby/gems/2.0.0/gems/rake-10.3.2/lib/rake/application.rb:106:in `block (2 levels) in top_level'
/opt/bitnami/ruby/lib/ruby/gems/2.0.0/gems/rake-10.3.2/lib/rake/application.rb:106:in `each'
/opt/bitnami/ruby/lib/ruby/gems/2.0.0/gems/rake-10.3.2/lib/rake/application.rb:106:in `block in top_level'
/opt/bitnami/ruby/lib/ruby/gems/2.0.0/gems/rake-10.3.2/lib/rake/application.rb:115:in `run_with_threads'
/opt/bitnami/ruby/lib/ruby/gems/2.0.0/gems/rake-10.3.2/lib/rake/application.rb:100:in `top_level'
/opt/bitnami/ruby/lib/ruby/gems/2.0.0/gems/rake-10.3.2/lib/rake/application.rb:78:in `block in run'
/opt/bitnami/ruby/lib/ruby/gems/2.0.0/gems/rake-10.3.2/lib/rake/application.rb:176:in `standard_exception_handling'
/opt/bitnami/ruby/lib/ruby/gems/2.0.0/gems/rake-10.3.2/lib/rake/application.rb:75:in `run'
/opt/bitnami/ruby/lib/ruby/gems/2.0.0/gems/rake-10.3.2/bin/rake:33:in `<top (required)>'
/opt/bitnami/ruby/bin/rake:23:in `load'
/opt/bitnami/ruby/bin/rake:23:in `<main>'
Tasks: TOP => redmine:email:receive_imap

I've tried to patch imap.rb to force TLS, email.rb, ssl.rb. I import CA in my operating system. But i'm stick.
Notice that my email sending works perfectly with the same email server.

I do not know where I made a mistake, if anyone can help me, thank you
Regards