On 07/19/18 09:14, Johnny Hughes wrote: > On 07/18/2018 04:05 PM, Valeri Galtsev wrote: >> >> >> On 07/18/18 14:36, Johnny Hughes wrote: >>> On 07/18/2018 01:58 PM, Valeri Galtsev wrote: >>> >>> >>> <snip> >>> >>>>> But are you guys really telling you think the calendaring / scheduling >>>>> for individual users and the main corporate account, etc. .. are >>>>> working >>>>> well enough with any Linux solution. >>>> >>>> I must confess, my servers are FreeBSD, but I'm quite sure the same is >>>> doable easily on Linux. >>>> >>>> We use for calendars Owncloud (may migrate to nextcloud in some future >>>> to come). That authenticates against LDAP. >>> >>> And does that calendar solution allow for things like: >>> >>> 1) Allowing all users in the organization to see users calendars and >>> see when they are free to schedule a meeting with them. >> >> Yes at least about a part of it: calendars can be shared with some >> people or with everybody (which we didn't do, so I may be not 100% >> presenting "experimental fact" here). Not certain about "free/not free" >> mapped on calendars though. >> >>> >>> 2) Allow for designated people to schedule meetings for others (ie, your >>> secretary/office assistant can schedule meetings for people, etc.) >> >> Yes, you can share calendar with anybody, and can set any set of choices >> >> can read >> can write >> can "re-share" your calendar >> >> You can share stuff to external people, and set individual >> authentication for them independent of our system (in general, it is not >> just calendars, but we use it for mostly synchronizing between all of >> your devices, and also sharing: files, calendars, address book; it can >> also be bookmarks, and there are variety of plugins expanding what else >> can be accessed/synchronized via web/dav) >> >>> >>> 3) Allow a calendar to schedule shared items .. like meeting rooms, >>> shared vehicles, etc. So that people can check those out for specifc >>> time windows, etc. >> >> No, but for resource booking (if I read the question correctly) we use >> mrbs (https://mrbs.sourceforge.io/). I know, that is not "integrated" >> for you to have everything in one place. I never had time to look for >> extention/plugin to suck from mrbs booked slot into one's calendar. >> >>> >>> Those are just a couple of minor things a lot of solutions can't do >>> >>> And do they work with imap, etc. >> >> No, owncloud/nextcloud don't work with IMAP as far as I know. Mail >> server is separate issue. Zimbra in that respect IS "integrated >> collaborative environment". And so is Kolab. They both are lacking >> per-user spam preferences. One more thing that added some minus for each >> of them in my estimate what to choose is: behind each of them there is >> commercial company. And that in my looooong experience significantly >> increases the chance one day openly available incarnation of each may >> become no longer available for us, and I will have to find replacement >> in a rush and find the way to migrate to it, and the more sophisticated >> the thing is, the trickier the migration will be. >> >> My answers are mostly about owncloud which we use for quite some time. >> Nextcloud is fork of owncloud, and to my regret nextcloud doesn't work >> with postgresql, only with mysql/MariaDB, whereas owncloud works with >> postgresql as well as with mysql/MariaDB (still we have some reasons to >> migrate to nextcloud at some point). >> >> I hope, someone with more knowledge will chime in. >> >> > > Don't get me wrong. I've run qmail, postfix, and zimbra mail servers > with IMAP, along with webmail front ends (roundcude, squirrel mail, > etc), for windows, mac and linux clients for several companies (all on > CentOS of course :D) .. I just don't think that calendaring that I have > seen is as user friendly as google calendar (for example). But I'm all > for people running mail servers on CentOS (or any other Linux) if they > want ! No, I'm not getting you wrong. You gave nicely put set of properties [some]one may be interested to know of, which I tried to answer. Also: Thanks, Arif, for correcting/expanding in the other post what I said about owncloud/nextcloud. That was extremely helpful! <rant> As far as google anything goes, not everybody volunteers one's information into paws of google (and quite likely one or more of 3 letter agencies collecting information that way). I know (call it educated guess) that about 70% of messages I send are ending up in google databases whether I want it or not. Someone said quite some time ago: you don't need to recruit spies anymore, just roll out "free" services, and information will trickle to you. I am old enough to know what collection of information on everybody leads to (Hitler Germany, Stalin Russia, ...), but I also know that the worst lesson of history is: people do not learn lessons of history. So, I do the best I can do: roll out services people I work for may need, and avoid by any means advertising google whatever myself, I just keep neutral when that surfaces in discussions with my people. </rant> Valeri > >> >>> Zimbra does not work very well with >>> Thunderbird and Lighting (for example) .. many solutions don't work with >>> Windows or Mac clients, etc. >>> >>> >>>> >>>> For mail we use postfix, dovecot and maia for spam filtering (the last >>>> harnesses spamassassin, clamav and few other things). >>>> >>>> Of course, zimbra you mentioned earlier in the thread (or was it not >>>> you?), and Kolab provide more corporate-like collaboration environments, >>>> but I shied away from them as I set myself a goal to give users >>>> individual handle on spam/virus filtering in email, and neither of them >>>> has per-user spam preferences (take it with the grain of salt, I might >>>> have missed something...) >>>> >>>> Just my $0.02. >>>> >>> <snip> > > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos > -- ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++