The custom autodiscover.xml file doesn't appear to be working.
Doing the "test e-mail autoconfiguration" option, the log shows:

Attempting URL https://s-d230exf1.dist230.org/Autod...todiscover.xml
found through SCP
Autodiscover to https://s-d230exf1.dist230.org/Autod...todiscover.xml
starting
Autodiscover to https://s-d230exf1.dist230.org/Autod...todiscover.xml
succeeded (0x00000000).

However, when I click on the XML tab and look at the settings, it only shows
protocol type EXCH and WEB. It doesn't list POP3 or SMTP (I copied the
sample XML config from the URL you sent me previouly for sample config).
I've rebooted the server to make sure changes take effect, doesn't seem to
read the file. If I stop the web service on the front-end box, then I get
failures, so I know it is pulling the file from the right server. If I
create a 'testing.htm' file in the folder where the autodiscover.xml file is,
and reference that file name instead of autodiscover.xml, that test file
opens, so I know I am using the right server and the right directory.
I just don't see what else I need to do for it to read the autodiscover.XML
file to add the POP3/SMTP settings (and once done getting the sample to
work...the IMAP settings).

My next item beyond this step will be to have the user account filled in (it
is different than the username) for the IMAP account. Is there a way to
specificy LoginName%FIRSTNAME.%LASTNAME/LoginName or anything clever like
that so when it fills in the information, it pre-populates the info based on
settings in AD?

Thanks.