On 27 Mar 2013, at 8:32, Gaby L wrote:
Thanks
I have refered to split only postfix functions,but for it ,is need
create coherent users system.
For example if I create one user in gmail system,this user physical is
stored only one central machine then is accesed through diverse
distribute mechanism (same DNS),or is replicate in all machine?
I'm not completely certain that I understand what you are asking about,
but I'll try to provide something like an answer.
Stored mail is not managed by Postfix. Once mail is delivered, Postfix
never touches it again. Access to delivered mail is handled by IMAP,
POP, and Webmail software. Postfix is none of those.
The fact that a user account exists, the details of how mail is
delivered to that account, and its authentication mechanism (used to
allow a user to submit mail) are used directly Postfix. In a distributed
Postfix environment there are multiple options you could use to make
those aspects of the account accessible to multiple Postfix instances,
and choosing between them must be informed by the details of the
specific environment. Postfix is a user of that information, not the
manager of it. Postfix can access user information via LDAP, MySQL,
memcache, a generic socket protocol, and from file in a variety of
formats including dbm, BerkeleyDB, and CDB. Postfix can use the SASL
authentication libraries of Cyrus or Dovecot. All of these options exist
because they fit different types of environment. There is not a single
recipe.
