Rails - Jul 2007 - Attachement corrupt

I''m using ActionMailer to send an e-mail with attachement, but I
receive the same e-mail attachement corrupted.

How I can resolve that?

The enviroment is:
- Windows
- Microsoft Exchange Server.

Code Enviroment.rb:

   1. ActionMailer::Base.delivery_method = :smtp
   2.
   3. ActionMailer::Base.smtp_settings = {
   4.   :address => ''nome_do_servidor'',
   5.   :port => 25,
   6.   :domain => nil
   7. }

Code Method to send e-mail:
   1. def enviar(mensagem)
   2.   @subject    = mensagem.assunto
   3.   @body       = {:mensagem => mensagem}
   4.   @recipients = mensagem.para
   5.   @from       = mensagem.de
   6.   @sent_on    = Time.now
   7.   @headers    = {}
   8.
   9.   unless mensagem.arquivos.blank?
  10.     arquivo = mensagem.arquivos
  11.     attachment(:filename => File.basename(arquivo)) do |a|
  12.       file = File.open(arquivo, ''r+'') {|f| a.body
f.read}
  13.     end
  14.   end
  15. end


Thanks,

Daskandonga


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