<s>
Vpopmail	B-Protocol
is	O
an	O
open-source	O
GPL	B-License
software	O
package	O
used	O
for	O
managing	O
virtual	O
e-mail	B-Application
domains	O
and	O
non	O
password	O
e-mail	B-Application
accounts	O
on	O
e-mail	B-Application
mail	O
servers	O
.	O
</s>
<s>
Unique	O
domains	O
for	O
each	O
directory	O
under	O
vpopmail	B-Protocol
user	O
with	O
a	O
Unique	O
password	O
files	O
for	O
each	O
domain	O
.	O
</s>
