Connection error when running an async mailer

[zinkkrysty]

I get this stack:

Exception
Errno::ECONNREFUSED
Error
Connection refused - connect(2)

/Users/cristianandrei/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/net/http.rb:644:in `initialize'
/Users/cristianandrei/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/net/http.rb:644:in `open'
/Users/cristianandrei/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/net/http.rb:644:in `block in connect'
/Users/cristianandrei/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/timeout.rb:44:in `timeout'
/Users/cristianandrei/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/timeout.rb:89:in `timeout'
/Users/cristianandrei/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/net/http.rb:644:in `connect'
/Users/cristianandrei/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/net/http.rb:637:in `do_start'
/Users/cristianandrei/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/net/http.rb:626:in `start'
/Users/cristianandrei/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/open-uri.rb:306:in `open_http'
/Users/cristianandrei/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/open-uri.rb:769:in `buffer_open'
/Users/cristianandrei/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/open-uri.rb:203:in `block in open_loop'
/Users/cristianandrei/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/open-uri.rb:201:in `catch'
/Users/cristianandrei/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/open-uri.rb:201:in `open_loop'
/Users/cristianandrei/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/open-uri.rb:146:in `open_uri'
/Users/cristianandrei/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/open-uri.rb:671:in `open'
/Users/cristianandrei/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/open-uri.rb:33:in `open'
/Users/cristianandrei/.rvm/gems/ruby-1.9.2-p290@autouncle/gems/inline-style-0.5.0/lib/inline-style.rb:90:in `block in extract_css'
/Users/cristianandrei/.rvm/gems/ruby-1.9.2-p290@autouncle/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:239:in `block in each'
/Users/cristianandrei/.rvm/gems/ruby-1.9.2-p290@autouncle/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:238:in `upto'
/Users/cristianandrei/.rvm/gems/ruby-1.9.2-p290@autouncle/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:238:in `each'
/Users/cristianandrei/.rvm/gems/ruby-1.9.2-p290@autouncle/gems/inline-style-0.5.0/lib/inline-style.rb:82:in `collect'
/Users/cristianandrei/.rvm/gems/ruby-1.9.2-p290@autouncle/gems/inline-style-0.5.0/lib/inline-style.rb:82:in `extract_css'
/Users/cristianandrei/.rvm/gems/ruby-1.9.2-p290@autouncle/gems/inline-style-0.5.0/lib/inline-style.rb:96:in `parse_css'
/Users/cristianandrei/.rvm/gems/ruby-1.9.2-p290@autouncle/gems/inline-style-0.5.0/lib/inline-style.rb:61:in `nodes_with_rules'
/Users/cristianandrei/.rvm/gems/ruby-1.9.2-p290@autouncle/gems/inline-style-0.5.0/lib/inline-style.rb:36:in `process'
/Users/cristianandrei/.rvm/gems/ruby-1.9.2-p290@autouncle/gems/inline-style-0.5.0/lib/inline-style.rb:26:in `process'
/Users/cristianandrei/.rvm/gems/ruby-1.9.2-p290@autouncle/gems/inline-style-0.5.0/lib/inline-style/mail-interceptor.rb:31:in `delivering_email'
/Users/cristianandrei/.rvm/gems/ruby-1.9.2-p290@autouncle/gems/mail-2.3.0/lib/mail/mail.rb:230:in `block in inform_interceptors'
/Users/cristianandrei/.rvm/gems/ruby-1.9.2-p290@autouncle/gems/mail-2.3.0/lib/mail/mail.rb:229:in `each'
/Users/cristianandrei/.rvm/gems/ruby-1.9.2-p290@autouncle/gems/mail-2.3.0/lib/mail/mail.rb:229:in `inform_interceptors'
/Users/cristianandrei/.rvm/gems/ruby-1.9.2-p290@autouncle/gems/mail-2.3.0/lib/mail/message.rb:218:in `inform_interceptors'
/Users/cristianandrei/.rvm/gems/ruby-1.9.2-p290@autouncle/gems/mail-2.3.0/lib/mail/message.rb:228:in `deliver'
/Users/cristianandrei/.rvm/gems/ruby-1.9.2-p290@autouncle/gems/resque_mailer-2.0.2/lib/resque_mailer.rb:36:in `perform'

My config is:
Rails 3.1.3
gem 'resque_mailer', '~> 2.0.2'

I also have asset_sync in production, but I tested this only in development:
gem 'asset_sync', "~> 0.3.1"