Exec'ing a script from Cyrus when imapd has a client

[David Lang]

On Tue, 20 Oct 2009, Greg A. Woods wrote:

> At Tue, 20 Oct 2009 19:36:24 +0200, Xavier Bestel <xavier.bestel at free.fr> wrote:
> Subject: Exec'ing a script from Cyrus when imapd has a client
>>
>> 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.
>
> I don't get it.  Are you saying you are using fetchmail to inject
> messages into a locally running Cyrus install which you then connect to
> with a locally running IMAP MUA?

I think what he is saying is that he does not have a MTA. he uses fetchmail to 
download mail from elsewhere and put it in cyrus.

currently he crons fetchmail to run once a min so that when people are logged in 
they see new mail with low latencies.

however, if nobody is logged in to Cyrus, this is a waste of time, and he would 
be better off running fetchmail less frequently (or not at all).

so he is asking if there is a way to tell if anyone is connected to Cyrus or 
not, so that if not he can skip the fetchmail run.

David Lang


> Maybe you should just eliminate fetchmail from the picture and then see
> if things make more sense.  Just point your MUA at the originating IMAP
> server and eliminate everything in between.
>
> If you're using an IMAP capable client, and you're using IMAP to read
> your e-mail, then you don't need or want fetchmail -- it's just a rather
> nasty old hack for the days before IMAP.  Personally I think the last
> usable copy of fetchmail should be archived away on an ancient 9-track
> magnetic tape reel and put behind a little glass door which has "Break
> glass in case of emergency" written on it.  Everything is ever so much
> easier and simpler if you can just eliminate all the unnecessary
> complexities, such as fetchmail.
>
> (if you want to keep a copy of your messages on your local machine, then
> you can and should probably just use your MUA to do that)
>
>