Steps for undeliverable mail items

These steps apply to all categories of this problem.

Perform the following steps:

1. If an undeliverable mail message is returned to the originator of the mail, obtain the undeliverable mail message from the originator. It contains text indicating why the mail could not be sent.
2. If an undeliverable mail message is not returned to the originator of the mail.
   1. Check the SMTP log to see whether the undeliverable mail message is sent to the postmaster.
      • Check whether an SMTP EXIT program is installed and activated for outbound mail.
      • Check the SMTP.CONFIG data set for the EXITDIRECTION BOTH statement.
      • If EXITDIRECTION BOTH is coded, activate DEBUG in SMTP.CONFIG data set.
      • Check SYSDEBUG log to see whether SMTP exit program is rejecting the mail.
      • If yes, check the SMTP exit program.
   2. Check the SMTP log to see whether the undeliverable mail message is deleted because the mailbox of the originator does not exist.