postqueue -fYou might want to do this if your Internet connection was down but is now back up. About this option, the man page says: -f Flush the queue: attempt to deliver all queued mail. This option implements the traditional "sendmail -q" command, by contacting the Postfix qmgr(8) daemon. Warning: flushing undeliverable mail frequently will result in poor delivery performance of all other mail.
Computer Tips - How do I make postfix deliver all waiting mail?
Date: 2008jul3 Product: postfix Q. How do I make postfix deliver all waiting mail? A. Run this command: