Set up JES so that CSSMTP can create, read, write, and
purge data from the JES spool data set.
Procedure
Perform the following steps to set up JES:
- Set up JES2 or JES3 initialization parameters so that CSSMTP
can interface with JES utilities to create, read, write, and purge
data from the JES spool data set. For information about JES2 initialization, see z/OS JES2 Initialization and Tuning Guide. For information about JES3 initialization, see z/OS JES3 Initialization and Tuning Guide. For information about JES RACF® authorization,
see z/OS Security Server RACF Security Administrator's
Guide.
- Verify that JES exit programs do not interfere with the
function of CSSMTP. For JES2 exit and exit routine association, see z/OS JES2 Initialization and Tuning Reference. For JES3, if you are using the IATUX18 exit, see z/OS JES3 Customization.
- Set up security authorization for the CSSMTP started task
name in your definitions of authorized users. If you are
using RACF for security, see z/OS Security Server RACF Security Administrator's
Guide for information about RACF controls
for the spool file.
- Set up CSSMTP for warm starts by configuring the CHKPOINT
DD statement. Checkpointing enables CSSMTP to recognize
partially processed spool files, so that CSSMTP does not reprocess
the entire spool file when restarting. This reduces the duplicate
mail messages that are received by mail message recipients. Warm starts
work only when restarting CSSMTP with the same job name and external
writer name. If CSSMTP is started cold using the -f option,
any existing checkpoint records are flushed before CSSMTP is restarted.
For information about using the CHKPOINT DD statement in the CSSMTP started procedure and about starting CSSMTP, see z/OS Communications Server: IP Configuration
Reference.