Xavier Bestel wrote: > Hi, > > I have a small install with cyrus-imapd 2.3.14, which reads some of its > mails with fetchmail. To limit the delay in mail delivery, fetchmail > awakes each minute to get mails. > What I would like is let fetchmail do that only when there's a client > actually reading its mails, i.e. an MUA actually connected to imapd. > > So, my question: how to hook a script each time a client > connects/disconnects from imapd ? >
Check /var/imap/proc for files. If any are present, then a client is connected.
Write a
polling script to run out of cron that checks for this and runs fetchmail if
appropriate.
I'll let other's comment on the soundness of this.
Semi-pseudo code.
#/bin/sh
if [ $(find /var/imap/proc -type f | wc -l) -gt 0 ]; then
fetchmail
fi
For bonus points, you could parse the proc files and only run fetch mail for
the users
actually connected.
find /var/imap/proc -type f | \
xargs awk 'BEGIN{FS="\t"}{if (length($2)) print $2}' | \
sort -u | \
xargs <dispatch_command>
--
Russell A. Jackson <r...@csub.edu>
Network Analyst
California State University, Bakersfield
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