diff --git a/lib/tasks/e_paper_tasks.rake b/lib/tasks/e_paper_tasks.rake
index 0c41957..477b6f6 100644
--- a/lib/tasks/e_paper_tasks.rake
+++ b/lib/tasks/e_paper_tasks.rake
@@ -35,7 +35,7 @@ namespace :epaper do
 				tls = (site['site_settings']['enable_starttls_auto'] == "1")
 		        from_addr = site['site_settings']['service_email']
 				emails_valid.each_slice(mail_limit).each do |slice_emails|
-					invalid_mails = verify_email(from_addr,slice_emails,tls)
+					invalid_mails = epaper_verify_email(from_addr,slice_emails,tls)
 					deliver_emails = slice_emails - invalid_mails
 					email = Email.new(:mail_subject => paper.sending_title, :mail_lang => args[:locale], :template => "admin/e_paper_criterias/emailer", :template_data => {"paper_id" => paper.id, "page" => "http://" + domain + page, "siteurl" => "http://" + domain, "papers_data" => papers_data }, :mail_to => deliver_emails)
 					begin
@@ -64,12 +64,12 @@ namespace :epaper do
 			paper.save
 		end
 	end
-	def verify_email(from_addr,check_emails,tls) #true if check_email is ok
+	def epaper_verify_email(from_addr,check_emails,tls) #true if check_email is ok
 		s = Timeout.timeout(@open_timeout, Net::OpenTimeout) do
 			TCPSocket.open(@address, @port)
 		end
-		@socket = new_internet_message_io(tls ? tlsconnect(s) : s)
-	    res = get_response("MAIL FROM:<#{from_addr}>")
+		@socket = epaper_new_internet_message_io(tls ? epaper_tlsconnect(s) : s)
+	    res = epaper_get_response("MAIL FROM:<#{from_addr}>")
 	    invalid_emails = []
 	    check_list = []
 	    if check_emails.class == String
@@ -82,8 +82,8 @@ namespace :epaper do
 	    	check_list = check_emails
 	    end
 	    check_list.each do |check_email|
-			res1 = get_response("RCPT TO:<#{check_email}>")
-			res2 = get_response("RCPT TO:<#{check_email}>")
+			res1 = epaper_get_response("RCPT TO:<#{check_email}>")
+			res2 = epaper_get_response("RCPT TO:<#{check_email}>")
 			if !(res1.success? && res2.success?)
 				invalid_emails << check_email
 				puts [check_email,res1.message,res2.message]
@@ -92,14 +92,14 @@ namespace :epaper do
 		s.close
 		invalid_emails
 	end
-	def get_response(reqline)
-	    res = critical {
+	def epaper_get_response(reqline)
+	    res = epaper_critical {
 	        @socket.writeline reqline
-	        recv_response()
+	        epaper_recv_response()
 	    }
 	    return res
 	end
-	def recv_response
+	def epaper_recv_response
 	    buf = ''
 	    while true
 	       line = @socket.readline
@@ -108,7 +108,7 @@ namespace :epaper do
 	    end
 	    Net::SMTP::Response.parse(buf)
 	end
-	def critical
+	def epaper_critical
 	 return Net::SMTP::Response.parse('200 dummy reply code') if @error_occurred
 	 begin
 	   return yield()
@@ -117,12 +117,12 @@ namespace :epaper do
 	   raise 
 	 end
 	end
-	def ssl_socket(socket, context)
+	def epaper_ssl_socket(socket, context)
 	  OpenSSL::SSL::SSLSocket.new socket, context
 	end
-	def tlsconnect(s)
+	def epaper_tlsconnect(s)
 	    verified = false
-	    s = ssl_socket(s, @ssl_context)
+	    s = epaper_ssl_socket(s, @ssl_context)
 	    s.sync_close = true
 	    s.connect
 	    if @ssl_context.verify_mode != OpenSSL::SSL::VERIFY_NONE
@@ -133,7 +133,7 @@ namespace :epaper do
 	    ensure
 	    s.close unless verified
 	end
-	def new_internet_message_io(s)
+	def epaper_new_internet_message_io(s)
 	    io = Net::InternetMessageIO.new(s)
 	    io.read_timeout = @read_timeout
 	    io.debug_output = @debug_output