Postini validation failures: Failed to connect to port 443

[guest]

Symptom: when trying to synchronize directory, you may receive this error:

Directory server error: Failed to connect to host <hostname> on port 443. Please verify your settings and try again.

Resolution: 1. Make sure you can telnet port 443.

2. Make sure the authentication settings on the IIS
server are configured correct for the /dsml virtual directory.
To configure the /dsml virtual directory for
Basic Authentication, please follow these steps:
1) Launch IIS Manager from Start -> All Programs -
> Administrative Tools -> IIS Manager.
2) In (local machine), navigate to Web Sites ->
Default Web Sites -> dsml (virtual directory).
3) Click on the Directory Security tab.
4) In the Authentication and access control box,
click Edit...
5) Uncheck Enable anonymous access.
6) Check Basic authentication. A dialog will appear
to warn you that your user name and password will
be sent over the net in clear text. Since the
connection will be through SSL, this warning does
not apply. Click Yes to continue.
7) In Authenticated access, make sure all other
boxes besides Basic Authentication are unchecked.
Click OK to close the dialog box.