Monitoring resources used

After the CSSMTP application is started it will periodically check the following resources, and determines if any action needs to be taken:

JES tasks
Storage use in the CSSMTP application address space
Storage use for z/OS® UNIX file system in the configured or default dead letter directory
Storage use for z/OS UNIX file system in the configured or default mail directory

Table 1. Common messages used for monitoring resources
Symptoms	Problem/Cause	Action
EZD1856I	This message indicates either that over 75% of DEST JES tasks and 75% of WRITER JES tasks are waiting for long retry processing to complete one or more mail messages in a spool file.	For details and other messages, see the appropriate EZD1856I message in z/OS Communications Server: IP Messages Volume 2 (EZB, EZD). You should automate on this message to monitor the JES tasks that are not available. Use automation to decide whether to reissue the MODIFY FLUSHRetry command to remove mail messages from the retry queue to free up the JES tasks, or to issue the MODIFY SUSPEND command to suspend all new spool file processing. Message EZD1857I is issued when the usage of DEST JES tasks and the usage of WRITER JES tasks that are waiting for long retry processing drops below 50%. You can automate this message to monitor the usage of JES tasks, and to decide whether you should issue the MODIFY RESUME command (if MODIFY SUSPEND command was issued previously) to resume processing for the new spool files.
EZD1858I	This message indicates that storage utilization in the CSSMTP application address space exceeds 75%.	For details and other messages, see the appropriate EZD1858I message in z/OS Communications Server: IP Messages Volume 2 (EZB, EZD). You should automate on this message to monitor storage utilization. Use automation to decide whether to issue the MODIFY SUSPEND command to suspend all new spool file processing. EZD1859I is issued when storage use drops below 50% in the CSSMTP application address space. You can automate this message to monitor storage use, and to decide whether you should issue the MODIFY RESUME command (if MODIFY SUSPEND command was issued previously) to resume processing for the new spool files.
EZD1860I	This message indicates that storage utilization for z/OS UNIX file system in the configured or default dead letter directory exceeds 75%.	For details and other messages, see the appropriate EZD1860I message in z/OS Communications Server: IP Messages Volume 2 (EZB, EZD). You should automate on this message to monitor storage use. Use automation to decide whether to issue the MODIFY SUSPEND command to suspend all new spool file processing and clean up all stored and unneeded dead letters to free up storage. EZD1861I is issued when storage use for the z/OS UNIX file system in the configured or default dead letter directory drops below 50%. You can automate this message to monitor storage use, and to decide whether you should issue the MODIFY RESUME command (if MODIFY SUSPEND command was issued previously) to resume the processing for the new spool files.
EZD1862I	This message indicates that storage utilization for z/OS UNIX file system in the configured or default mail directory associated with the ExtendedRetry statement exceeds 75%.	For details and other messages, see the appropriate EZD1862I message in z/OS Communications Server: IP Messages Volume 2 (EZB, EZD). You should automate on this message to monitor storage use. Use automation to delete any files in the file system that are no longer needed. Do not delete any files from the mail directory. If target servers are available to receive the mail, decide whether to issue the MODIFY FLUSHRtry,AGE=days command to delete old mail messages from the mail directory. Use the MODIFY DISPLAY,TARgets command to monitor the number of mail messages in the extended retry directory and the state of the target servers used by CSSMTP. EZD1863I is issued when storage use for the z/OS UNIX file system in the configured or default mail directory drops below 50%. You can automate on this message to monitor the storage use.