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Restart email processes

To restart Qmail POP3, SEND and SMTPD processes:
CODE
qmailctl stop
killall qmail-pop3d
killall qmail-send
killall qmail-smtpd
qmailctl start


To restart Courier IMAP process:
CODE

/etc/init.d/courier-imap stop
/etc/init.d/courier-imap start

If failed, kill the process:

kill -9 qmail-send 
qmailctl start

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