I have seput the exchange 2010 standard edtion in our small organization.Internally i am able to send and receive the emails.
Now i want to send and rceive the emails from internet.
I have googled about and know the MX records need to configure.
I don't know what id MX record , how to create and , how to configure, what are required steps need to be done at exchange server end to send/receive emails?
We didnt setup the Firewall/gateway? In future we have plan , If we setup Firewall/gateway in future what are the changes need , how we configure the mail to internet?
Give some explanation if possible with pics.