Solaris 9 & Solaris 10: By default mailx cannot send out email without Sendmail daemon running
(Doc ID 1003382.1)
Last updated on MARCH 30, 2021
Applies to:Solaris Operating System - Version 8 and later
In Solaris[TM] 8, mailx and Sendmail commands can be used to send email without the Sendmail daemon running. For example:
# echo "test mail" | mailx -s "test mail" sample_user@domain_name.com
However, in Solaris 9 and Solaris 10, by default, the email will not be delivered and will remain in /var/spool/clientmqueue if the Sendmail daemons are not running.
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