<s>
Zarafa	B-Protocol
was	O
an	O
open-source	B-Application
groupware	B-Application
application	O
that	O
originated	O
in	O
the	O
city	O
of	O
Delft	O
in	O
the	O
Netherlands	O
.	O
</s>
<s>
The	O
company	O
that	O
developed	O
Zarafa	B-Protocol
,	O
previously	O
known	O
as	O
Connectux	O
,	O
is	O
also	O
called	O
Zarafa	B-Protocol
.	O
</s>
<s>
The	O
Zarafa	B-Protocol
groupware	I-Protocol
provided	O
email	O
storage	O
on	O
the	O
server	O
side	O
and	O
offered	O
its	O
own	O
Ajax-based	O
mail	B-Protocol
client	O
called	O
WebAccess	O
and	O
a	O
HTML5-based	O
,	O
WebApp	O
.	O
</s>
<s>
Zarafa	B-Protocol
has	O
been	O
superseded	O
by	O
Kopano	B-Protocol
.	O
</s>
<s>
Zarafa	B-Protocol
was	O
originally	O
designed	O
to	O
integrate	O
with	O
Microsoft	B-Application
Office	I-Application
Outlook	I-Application
and	O
was	O
intended	O
as	O
an	O
alternative	O
to	O
the	O
Microsoft	B-Operating_System
Exchange	I-Operating_System
Server	I-Operating_System
.	O
</s>
<s>
Connectivity	O
with	O
Microsoft	B-Application
Outlook	I-Application
was	O
provided	O
via	O
a	O
proprietary	O
client-side	O
plugin	O
.	O
</s>
<s>
The	O
open	O
source	O
edition	O
does	O
not	O
support	O
any	O
MAPI-based	O
Outlook	O
users	O
,	O
while	O
the	O
community	O
edition	O
supports	O
three	O
Outlook	O
users	O
.	O
</s>
<s>
All	O
server-side	O
components	O
and	O
the	O
WebApp/WebAccess	O
of	O
Zarafa	B-Protocol
are	O
published	O
under	O
the	O
Affero	O
General	B-License
Public	I-License
License	I-License
(	O
AGPL	O
)	O
,	O
based	O
on	O
the	O
GNU	B-License
General	I-License
Public	I-License
License	I-License
,	O
version	O
2	O
(	O
GPLv2	O
)	O
.	O
</s>
<s>
Introducing	O
and	O
maintaining	O
a	O
dual-licensing	O
strategy	O
,	O
on	O
18	O
September	O
2008	O
Zarafa	B-Protocol
released	O
the	O
full	O
core	O
software	O
,	O
that	O
is	O
the	O
server	O
side	O
software	O
stack	O
,	O
under	O
the	O
GNU	B-Application
Affero	I-Application
General	I-Application
Public	I-Application
License	I-Application
,	O
version	O
3	O
(	O
AGPLv3	B-Application
)	O
.	O
</s>
<s>
Zarafa	B-Protocol
provides	O
its	O
groupware	B-Application
functionality	O
by	O
connecting	O
the	O
Linux-based	O
server	O
with	O
Outlook	O
clients	O
using	O
MAPI	B-Protocol
.	O
</s>
<s>
The	O
communication	O
between	O
server	O
and	O
client	O
is	O
based	O
upon	O
SOAP	B-Application
technology	O
.	O
</s>
<s>
The	O
connection	O
to	O
Outlook	O
clients	O
can	O
be	O
secured	O
using	O
TLS/SSL	B-Protocol
,	O
either	O
directly	O
between	O
the	O
Zarafa	B-Protocol
server	O
program	O
and	O
the	O
client	O
,	O
or	O
via	O
an	O
HTTPS	B-Application
proxy	I-Application
.	O
</s>
<s>
All	O
data	O
is	O
generally	O
stored	O
in	O
a	O
MySQL	B-Application
database	O
,	O
although	O
attachments	O
can	O
be	O
saved	O
on	O
the	O
filesystem	O
.	O
</s>
<s>
The	O
Zarafa	B-Protocol
server	O
can	O
get	O
its	O
user	O
information	O
from	O
LDAP	B-Protocol
,	O
Active	B-Protocol
Directory	I-Protocol
,	O
Unix	B-Application
user	O
accounts	O
or	O
the	O
MySQL	B-Application
database	O
.	O
</s>
<s>
The	O
webmail	B-Protocol
is	O
based	O
on	O
HTML5	O
(	O
WebApp	O
)	O
and	O
AJAX	B-General_Concept
technology	O
(	O
WebAccess	O
)	O
,	O
with	O
a	O
PHP	B-Application
backend	O
using	O
a	O
MAPI	B-Protocol
PHP	B-Application
extension	O
.	O
</s>
<s>
Other	O
clients	O
can	O
connect	O
via	O
POP3	B-Protocol
,	O
IMAP	B-Protocol
and	O
iCalendar/CalDAV	O
.	O
</s>
<s>
Zarafa	B-Protocol
initiated	O
a	O
project	O
called	O
Z-push	B-Protocol
in	O
October	O
2007	O
.	O
</s>
<s>
It	O
supports	O
Exchange	B-Protocol
ActiveSync	I-Protocol
compatible	O
devices	O
(	O
Symbian	B-Operating_System
,	O
Pocket	B-Device
PC	I-Device
,	O
iPhone	B-Device
(	O
firmware	O
2.0	O
and	O
higher	O
)	O
,	O
Android	B-Application
(	O
version	O
2.1	O
and	O
higher	O
)	O
,	O
Nokia	O
(	O
mail4Exchange	O
)	O
)	O
implementing	O
the	O
ActiveSync	O
protocol	O
and	O
using	O
the	O
Incremental	O
Change	O
System	O
(	O
ICS	O
)	O
provided	O
by	O
the	O
PHP-MAPI	O
extension	O
.	O
</s>
