SOAP unable to create a socket after OS upgrade OS/400 V5R4 to V7R1

Hello,

after we upgraded our OS from System i V5R4 to V7R1 we have problems with our SOAP adapters.

In the runtime workbench and also in the SXMB_MONI the following error occured:

SOAP: call failed: java.io.IOException: unable to create a socket

Message-Verarbeitung fehlgeschlagen. Grund: com.sap.engine.interfaces.messaging.api.exception.MessagingException: java.io.IOException: unable to create a socket

Before the OS upgrade the adapter rans without any errors and we tested the connection to the partner

with an system running V5R4 with success. So it seems to be an error that came with the OS upgrade.

Any idea? Had any one the same error after migration to V7R1? Thanks for your help.

Best regards,

Matthias