Table of Contents

PostFix

Command to view, force send and delete queues

View Queued messagesmailq
Delete all Queued messagespostsuper -d ALL
Force sending mailsendmail -q
View Message content in Queuepostcat -q <Queue Id>

Reference: http://www.cyberciti.biz/tips/force-sendmail-to-deliver-a-message-in-sendmails-mail-queue.html