SocketException: Error when getting an FTP connection pool

If an FTP channel errors out with these messages:
Message processing failed. Cause: com.sap.aii.af.ra.ms.api.RecoverableException: Error when getting an FTP connection from connection pool: com.sap.aii.af.service.util.concurrent.ResourcePoolException: Unable to create new pooled resource: SocketException: Connection timed out:could be due to invalid address
Message processing failed. Cause: com.sap.aii.af.ra.ms.api.RecoverableException: Could not get FTP connection from connection pool (1 connections) within 5,000 milliseconds; increase the number of available connections
Possible reasons for the errors are:
1. The target server is down. Check if the server is available by pinging.
2. FTP services are down. Check if you are able to login using ftp command.
3. Firewall is blocking the connection. Check with the firewall support team.
4. The target server is non responsive. Check with the server administrator.

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