* Charles Marcus <dovecot@dovecot.org>: > On 2012-12-04 9:20 AM, Jakob Curdes <j...@info-systems.de> wrote: > >Am 04.12.2012 15:15, schrieb Marc Perkel: > >>Just wondering if there's an open source Linux alternative to MS > >>Exchange so that all the features of outlook work? > >Did you have a look at zarafa? Most part of it is open source; the > >outlook connector ist closed source however and requires a license > >fee for more than three clients. > >It uses MAPI to connect to Outlook, unlike many other solutions > >that do calendar syncs etc. via the ActiveSync protocol. Zarafa is > >a completely different thing than dovecot, however; it stores all > >mails in a MySQL database. > > So does SOGo, no plugin required for Outlook. There is an extension > for Thunderbird+Lightning, and it also supports most every mobile > client out there.... and it uses Dovecot for the IMAP server *now*, > and also includes OpenChange and Samba4. It is also supposed to be > *very* lightweight, and can integrate with most any other backend > you may be using. We currently use PostfixAdmin for managing email > users, and we'll be able to happily keep using it for as long as we > want after the migration.
We've used SOGo for the last three years and we deployed it at various locations - starting from 3 up to 30.000 users. SOGo is stable, the company behind SOGo knows what they are doing. If you plan to migrate a SIEVE configuration you need scripting skills or you will end up adding them all by hand. SOGo currently stores SIEVE rules in its database and writes them into a .sieve on request. It's a one way road. That is actually the onle downside I can think of. > We will be migrating to SOGo (using Thunderbird+Lightning+Google > Calendar now) very soon, and we are fully expecting to leverage the > fact that SOGo includes Samba4 in the future, so that when the time > comes for another Microsoft Server Upgrade, we will instead > 'upgrade' to Samba4, and demote our older 2008R2 servers to member > servers - if we keep them around at all. +1 p@rick -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Axel von der Ohe, Marc Schiffbauer Aufsichtsratsvorsitzender: Joerg Heidrich
