[Kolab-devel] shared calendar as long time reminding system?

Gunnar Wrobel wrobel at pardus.de
Fri Sep 11 16:08:19 CEST 2009

Quoting Bernhard Reiter <bernhard at intevation.de>:

> Am Donnerstag, 10. September 2009 16:23:44 schrieb Gunnar Wrobel:
>> > I guess the hackish solution would be to make sure a webclient is running
>> > all the time that has access to the folder and will just send out emails
>> > for each reminder. You might need a script to keep the horde sessing
>> > alive, though.
>> I think the Horde Alarm system allows setting up email reminders  
>> via a  cron job.
> From the concept side I do not see how this could work reliably.
> In order to read a folder, any client would need the users credentials
> which should only be kept in memory as long as the client is active.
> A cron job is another client and it dies not have the credentials to access
> the folder of any user.

Correct. The current reminder script is targeted at the  
SQL-Installation and the assumption is that you have an admin user  
that can read all events. This is easy for SQL but not the case if you  
have IMAP.

We do however already employ some kind of shared access for our  
resource accounts on the Kolab server. And often is might also be  
sufficient if there is only one specific user sending out reminders.  
In these limited cases you could provide the corresponding credentials  
for the cron job in a config file. I had hoped the current reminder  
script allows something like that.



> (And we should move the implementation details to the kolab-devel@ list.)
>> @Thorsten: Can you check section 4.4 ("Setting up reminder emails") of
>> http://www.horde.org/kronolith/docs/?f=INSTALL.html
>> and test if that works with the Kolab server? I admit I didn't test  
>>  this yet but if you start testing that I'll promise to help along  
>> to  get it working. It would be useful to add the necessary  
>> configuration  into the Kolab Server configuration templates (or at  
>> least into the  wiki).
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