Question : Exchange 2010 Send/Receive Connector

Hi,

My Exchange 2010 deployment is nearly done. I'm at a point where I can test OWA successfully and send/receive emails internally (when using AD contacts). I need to configure the send/receive connectors to work properly now.

I won't be using Edge Transport subscription because I have two postfix SMTP hosts in the perimeter network. That said, I've already gotten the postfix hosts configured with the correct relay maps. Do I need to configure the Exchange HUB transport Receive connectors to accept from these hosts?

I'm guessing that my HUB transport send connectors need to be configured properly? If so, I have setup the following:

Send Connector                          {SMTP:*;1}                              True

However, when I attempt to send out emails to my personal domain from the Exchange organization, I get the following in the message tracking:

The last attempt to send the message was at 7/12/2010 2:07:06 PM (GMT-08:00) Pacific Time (US & Canada) and generated the error '451 4.4.0 Primary target IP address responded with: "421 4.2.1 Unable to connect." Attempted failover to alternate host, but that did not succeed. Either there are no alternate hosts, or delivery failed to all alternate hosts.'.

Have I missed something crucial?

Answer : Exchange 2010 Send/Receive Connector

from your ht i would perform an nslookup for the mx record of your personal domain
nslookup
set type=mx
personaldomain.com

then i would attempt a telnet session on port 25 to the result
telnet mail.personaldomain.com 25
ehlo workdomain.com

that should result in a connection
you may need to install the telnet client on the server