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Chapter 20. Email Services > Summary - Pg. 458

458 Hands-on Guide to the Red Hat ® Exams: RHCSA TM and RHCE ® Cert Guide and Lab Manual Display current mail in the queue: # mailq -Queue ID- --Size-- ----Arrival Time---- -Sender/Recipient------- 099FCA110E 441 Thu Feb 3 06:40:21 root@example.com user01@example.com (connect to example.com[192.0.32.10]:25: Connection timed out) For some reason, this message seems to be stuck in the queue (I disabled the net- work interface to generate an error). You can just delete it from the queue and send it again later. Syntax: postsuper Options: -d queue_id [options] Deletes one message with the named queue ID (you can also specify ALL as the queue_id to erase all messages in the queue) Puts the specific message defined by queue_id "on hold" Releases the message that was put "on hold" -h queue_id -H queue_id