I am having some issues connecting to our prod sfdc org.

I can connec to our sandbox from our dev infa server.  I then try to connect to the prod ord from our prod infa server and am getting the following error:

SFDC_31101 : [FATAL] Login failed.  User [intuser@healthways.com].  Fault code [32].  Reason [SOAP Error : [Version Error : Version Mismatch]. Please Contact Informatica Customer support.].

I am using the same service url: https://www.salesforce.com/services/Soap/u/12.0

in test where it works i am using https://test.salesforce.com/services/Soap/u/12.0

Is this that the prod server might have a proxy issue?

I am having some issues connecting to our prod sfdc org.

I can connec to our sandbox from our dev infa server.  I then try to connect to the prod ord from our prod infa server and am getting the following error:

SFDC_31101 : [FATAL] Login failed.  User [intuser@healthways.com].  Fault code [32].  Reason [SOAP Error : [Version Error : Version Mismatch]. Please Contact Informatica Customer support.].

I am using the same service url: https://www.salesforce.com/services/Soap/u/12.0

in test where it works i am using https://test.salesforce.com/services/Soap/u/12.0

Is this that the prod server might have a proxy issue?