These steps can possibly help you to avoid having these records go into the retry queue. It should be noted that normally these errors are corrected on the first retry but the following steps can help you to reduce the number of retries in the system.
Ok, you have to take these steps on each IIS server hosting WCF services in your deployment that Connector for Microsoft Dynamics is interacting with:
MaxUserPort and TcpTimedWaitDelay Steps:
To create this entry, follow these steps:
1. Click Start, click Run, type regedit, and then click OK.
2. Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters
3. Right click Parameters, point to New, click DWORD Value, and then type MaxUserPort.
4. Right click MaxUserPort, click Modify, and then type 65534 for Value data, and set the radio button next to Decimal.
Note: This value controls the number of dynamic ports that are available. The valid range for this value is 5,000-65,534. Specifically, this parameter controls the maximum port number that is used when a program requests any available user port from the system.
5. Locate the following registry subkey: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Tcpip\Parameters
6. Right click Parameters, point to New, click DWORD Value, and then type TCPTimedWaitDelay.
7. Right click TCPTimedWaitDelay, click Modify, type 30 for the Value data, and set the radio button next to Decimal.
Note: This parameter determines the length of time that a connection stays in the TIME_WAIT state when it is closed. When a connection is in the TIME_WAIT state, the socket pair cannot be re-used. This is also known as the "2MSL" state. Typically, this value is two times the maximum segment life time on the network.
8. Exit Registry Editor.
9. Restart the IIS Service (IISRESET).