X-Originating and X-Apparently-From

[Andrew Doughety]

Hi,
	We are trying to perform DNSBL checks on incoming mail and we are 
not seeing any actual DNS queries.  When looking at the code it seems that 
the information on which IP(s) to check is obtained from X-Originating and 
X-Apparently-From headers.  Grepping through the code I do not see these 
headers anywhere else.  We are using Postfix as our MTA, perhaps that 
is the problem?  We could either write a postfix rule or edit the SA code to 
check the Received header.

Thanks,
Andrew