How to duplicate a copy of all incoming and outgoing mail

[Patrick Dung]

Thanks for reply.
Wow, postifx got their power. Very simple.

But I really want to know about Sendmail, because it's default in many Unix.
Checking out http://www.technoids.org/procmailfilter.html but it seems 
quite complex.

Edwin Groothuis wrote:

>On Tue, Oct 04, 2005 at 05:00:12PM +0800, Patrick Dung wrote:
>  
>
>>It is system wide, not specific user (~/.forward)
>>Is it possble with Sendmail?
>>How about Postfix and Qmail?
>>    
>>
>
>Grep for bcc in the output of postconf for postfix:
>
>    [~] edwin at k7>postconf | grep bcc
>    always_bcc = 
>    recipient_bcc_maps = 
>    sender_bcc_maps = 
>
>Edwin
>  
>