I am a first time Retina CS installer. I am going through the Retina CS Configuration Wizard. When I get to the Email Information window, I supply the NetBIOS name of my SMTP Mail Server (which accepts anonymous access), and an Administrator Email address. I get a red exclamation point, when I hover over it says "The specified email address is not valid".
I have used the same exact SMTP server and email address in configuring SMTP from other applications.
I thought maybe Retina CS is validating that the email address actually exists by doing an nslookup to determine the email address's MX record, followed by a telnet to the server indicated by the MX record, as described in the procedure "How to check if an email address exists without sending an email?" http://www.webdigi.co.uk/blog/2009/how-to-check-if-an-email-address-exists-without-sending-an-email/ . But I followed that procedure from my Retina CS server, and it works fine.
I am stuck. How does Retina CS Configuration Wizard determine if the Administrator Email Address entered is valid?