<s>
Mirapoint	B-Application
Email	I-Application
Appliance	I-Application
is	O
a	O
Unix-like	B-Operating_System
standards-compliant	O
black-box	O
e-mail	O
server	O
,	O
with	O
built-in	O
anti-spam	O
,	O
anti-virus	O
,	O
webmail	B-Protocol
,	O
POP	B-Protocol
,	O
IMAP	B-Protocol
,	O
calendar	O
,	O
and	O
LDAP	B-Protocol
routing	O
options	O
available	O
.	O
</s>
<s>
Full	O
access	O
to	O
the	O
Unix-like	B-Operating_System
Messaging	O
Operating	O
System	O
(	O
MOS	O
)	O
is	O
not	O
available	O
.	O
</s>
<s>
The	O
first	O
generation	O
of	O
Mirapoint	B-Application
Email	I-Application
Appliances	I-Application
were	O
introduced	O
in	O
December	O
1998	O
.	O
</s>
<s>
Both	O
platforms	O
consisted	O
of	O
a	O
3U	O
CPU	O
unit	O
,	O
tied	O
to	O
a	O
3U	O
high	O
RAID	B-Architecture
array	I-Architecture
and	O
a	O
3U	O
rack	O
mounted	O
UPS	O
(	O
uninterruptible	O
power	O
supply	O
)	O
.	O
</s>
<s>
All	O
the	O
models	O
consisted	O
of	O
3U	O
appliances	O
with	O
internal	O
RAID	B-Architecture
storage	I-Architecture
.	O
</s>
<s>
The	O
M2000	O
followed	O
the	O
M1000	O
specs	O
,	O
in	O
offering	O
a	O
large	O
external	O
RAID	B-Architecture
array	I-Architecture
and	O
external	O
UPS	O
.	O
</s>
<s>
The	O
new	O
twist	O
was	O
clustered	O
failover	O
,	O
allowing	O
two	O
M2000	O
heads	O
to	O
connect	O
to	O
a	O
single	O
RAID	B-Architecture
array	I-Architecture
with	O
redundant	O
controllers	O
.	O
</s>
