I recently ran into an issue where one of my customers HP Digital Senders would no longer resolve email addresses automatically to Active Directory using the HP Digital Sending Software version 4.91. It generated the error: “The operation failed. Please verify your configuration and try again. (LDAP error ServerDown occurred.)”: It also generated the error: “The operation failed. Please verify your configuration and try again. (AUTH_LDAP_SERVER_NOT_AVAILABLE)": While many different problems may cause these same errors, this particular problem was due to the DSS server communicating via IPv6 with the domain controller specified in the addressing portion of the configuration.
HP Digital Sender
Problem: Your Castelle FaxPress will not send faxes created with a HP Digital Sender using the HP MFP Digital Sending Software 4.x (DSS). The 4.x version of the HP MFP Digital Sending Software defaults to long filenames when setting it up for use with a fax product. A Castelle FaxPress does not support long file names and will not pick up the fax files even though everything else is set up correctly.
I recently updated and migrated some HP MFP Digital Sending Software (DSS) from version 4.13 to 4.16 and from a Windows 2003 Server to a Windows 2008 Server. One thing to note is that even the newest version of the HP DSS Software (4.16) will not run on a 64bit operating system so the newest operating system that can be used is a 32bit version of Windows 2008 (non-R2 since R2 is 64bit only).