A couple of things. Your VMMARK2.CONFIG says the client is vclient0 and your mail domain is maildomain0.datrium.com. The error at the bottom of STAX_Job_14.log says it's trying to communicate with primeclient.maildomain0.vmmark.datrium.com. Would you please check that the names you supply to VMMARK2.CONFIG are the actual names of the client and the domain?
Lisa