Sometimes i need to specify a name to show it when email is received.
Into "from" field i use this format:
addresser <some / something.com>

To do this i have to update smtp.rb file:
#C:\ruby\ruby-187p330\lib\ruby\1.8\net\smtp.rb

    def mailfrom(from_addr)
      if $SAFE > 0
        raise SecurityError, 'tainted from_addr' if from_addr.tainted?
      end
      #getok("MAIL FROM:<#{from_addr}>") #before
      str = from_addr.to_s =~ /<.+>/ ? from_addr.to_s.match(/<.+>/).to_s
: "<#{from_addr}>" #marcomd
      getok("MAIL FROM:#{str}") #marcomd
    end

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