How to use naming conventions on the IVPFILE for the mail.dat files in MailStream Plus

Operating System: z/OS
In the sample job called IVPFILE for MailStream Plus (MSP) on z/OS this at the top:

mdlc | your Mail.dat License Code |
#### | your Mail.dat Unique Job Code|

And this is present for each mail.dat file :


What does this mean?
If you want to name your mail.dat files with the correct naming convention rules in the MSP job step, then you can use the
mdlc - Mail.dat License Code – User your site’s Mail.dat License Code to replace the value mdlc
#### - replace this value with your job number

For example, change to

UPDATED:  April 21, 2017