The following error may be thrown by the Data Loader Service:
DataLoader: [1749612380-1179854255-11-0x0] Failed to process MAPI Exception Source: System.DirectoryServices Exception Type: System.Runtime.InteropServices.COMException Exception Message: The server is not operational.
Exception Target Site: Bind
MAPI is compromised. Outlook or another implementation of MAPI is installed on the Archive Manager server and is causing problems with our ability to connect to Exchange.
Stop all Archive Manager(AM) Services and the AM website. Uninstall ESM tools. Uninstall Outlook. Reinstall ESM tools. Bring up AM services and website. This should resolve the problem.
This error can have multiple causes, this is just one. Please see the following other solutions if this does not help to resolve your problem.