local_interfaces is used to specify the IP addresses on which the
demon will listen. These are ignored (understandably, as they are not
unique generally) when setting up an outgoing smtp connection.
It would be quite useful if in the transport definition there was an
option to specify the IP address to bind to (as there is one to
specify the port).
For one I would finally not risk of falling in the trap of my own spam checks..
(HELO != reverse lookup outgoing IP)
Giuliano
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