[cobalt-users] Problem receiving mail for virtual domain

[Matthew Marino <mattm@xxxxxxxxxxxxx>]

I read through the posts and FAQ's and nothing quite fit. A have a brand 
new RaQ4. I have the both network interfaces active. 1 is on the LAn at 
192.168.1.1, the other is on out public IP's at 151.203.141.136. The 
basic site is set up as the domain citystamp.com. I created a virtual 
site diegraphicsgroup.com on the interface 151.203.141.136. I have added 
diegraphicsgroup.com in the E-mail parameters as a host for which we 
recieve mail. I tested by sending SMTP to 192.168.1.1 and the server 
accepts the mail. I can then retrieve it via POP at the same address. I 
can ping the machine if I do it from the same subnet but not if I get on 
an outside network. Looks like an obvious routing problem. Oddly enough 
my outbound mail server has a WAN of 151.203.141.131 and should connect 
SMTP directly to it's neighbor.

  I have done all I can do to test DNS and nslookup returns the proper 
IP if I look up an MX record for diegraphicsgroup.com. I can't ping the 
RaQ4 but I'm not sure if that's a security feature as more and more 
devices try to avoid pings and port scans. My reading doesn't confirm 
that. The errors from my attempts to mail only read "connection deferred 
by mail.diegraphicsgroup.com". Don't know if that means the server was 
contacted and said nope or if it was unavailable.

  To summarize;

	Should the RaQ4 respond to pings with a source outside it's subnet 
mask?
	Is there any reasons the RaQ4 would not listen to SMTP on the WAN port?
	Can anyone confirm or deny that the DNS MX record is heading in the 
right direction?