2016-01-20 06:06:39 ERROR line 1836 renaming c:\fd\outbound\20060640.pk_ to
c:\fd\outbound\20060640.pkt
I think this is because the file 200606040.pkt already existed when the
.pk_ temp file was created and thus the rename will fail (can't rename over
an existing file) and then the packet is sent to the wrong link.
When generating a packet name, keep incrementing until both the .pkt and
.pk_ variants do not already exist. This should fix this scenario.