Yahoo client version 9.0 and higher fails to login and shows an error message: 81003004

Symptoms
 

• When debug logging is enabled the IMLinkage.log on the IM Manager Partner server there is a message like the following:

[|] 0xa48 | 06/05/09 10:09:52 | Functionality | CACENetworkingService::Disconnect | Disconnect on socket ID: 23[-]
[|] 0xa48 | 06/05/09 10:09:52 | Functionality | YahooHTTPConnectionHandler::~YahooHTTPConnectionHandler | Destroying 0x022dac58
[-][|] 0xa48 | 06/05/09 10:09:52 | Functionality | YahooFTConnectionHandler::~YahooFTConnectionHandler | Destroying 0x022dad2c[-]
[|] 0xa48 | 06/05/09 10:09:52 | Warning | YahooClientLoginOperation::HandleVCSFallBack | Unexpected response received from server 10.85.209.205 on port 80.  Are the hostname and port correct?
[-][|] 0xa48 | 06/05/09 10:09:52 | Functionality | GenericSessionManager::ReleaseSession | releasing 0x10450a3c[-]

See article How to Enable Debug Troubleshooting Information for IM Manager for details on enabling debug logging for IM Manager.

Conditions:
 

• The IM Manager Passthrough server is not configured to accept Yahoo version 9.0 and higher connections.

1. Open the IM Manager MMC Snap-In.
2. Click the Yahoo Agent tab.
3. The checkbox Yahoo 9.x clients to login not being checked indicates this condition.
• IM Manager configured in partner/passthrough architecture.

1. Open the IM Manager MMC Snap-In.
2. Click the Relay Service Configuration tab.
3. If the checkbox Use Passthrough Relay is checked then IM Manager is configured as a Partner server.