SMTP Connection over VPN

Harry Lachanas
Mon, 03 Jan 2011 08:03:33 -0000

I have site A and site B both running shorewall and are connected to
each other via VPN

Site A runs a Mail server that I wish to move temporarily to B and
configure shorewall to DNAT smtp connections on A -> B through VPN.

DNAT operates correct and sends the smtp connection to B with no problem

On B however

shorewall complaints ( Correctly in my opinion ) about Martial source
since it receives smtp connection from the net while the default route
on the firewall is not the VPN interface .... ( tun )

Any thoughts on how to overcome this ???

Kind Regards
Harry.


PS: Happy New Year List !!!!!