Displays the number of days after which SMTP returns mail as undeliverable. SMTP returns the mail to the sender with a note listing recipients that did not receive the mail. To change the number of days, change the RETRYAGE statement in hlq.SMTP.CONFIG. The default number of days for the RETRYAGE statement is 3 days. For more information on the RETRYAGE statement, see the z/OS Communications Server: IP Configuration Reference.