add -o receive_override_options=no_address_mappings
smtp      inet  n       -       -       -       -       smtpd
        -o content_filter=spamassassin
	-o receive_override_options=no_address_mappings


https://serverfault.com/questions/18707/postfix-send-double-mail-when-mail-is-forwarded






	

		

			

				

					

						Most likely you have a content filter and the always_bcc is being 
called both before and after the content filter. Customise the smtpd 
either before or after the content filter to include
					
-o receive_override_options=no_address_mappings
					

						(Note that options in master.cf can't contain spaces).
					
				
				

					

						

							

								

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										answered Jun 19 '09 at 4:38 
									
									

										
										

											
										
 
									
									

										Rob Chanter 
										

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						For me 'enable_original_recipient = No' in main.cf did the trick.:-)