Okey
1) I agree with you about Mysql cluster and replication . collect data on
one server and replicate it others then with active/active configuration we
can improve performans for reading and also solve the single point of fail.
Sorry it will be basic question but with mysql what kind of data distributes
I mean mysql store only mailbox informations ?! and mails are stored on file
?! or mailbox settings and datas on mysql ?!
And if I use LDAP at this moment mailboxs are distributed on file servers ?!
Of course disgn and hardware very imortant .
I think most important thing is frontend servers because of all mail comes
to those machines first ? virus and spam programs run on it. I think that
single cpu , fast disk machines enough I don'T think so put so strong
machines on Frontend.
Also I think that seperate webmail server and pop3 server because of load
:)
Thanks for your answers :)
Vahric
-----Original Message-----
From: exim-users-bounces@??? [
mailto:exim-users-bounces@exim.org] On
Behalf Of Peter Bowyer
Sent: Thursday, December 23, 2004 9:18 AM
To: exim-users@???
Subject: Re: [exim] Using Exim For Everything
Vahric MUHTARYAN <vahric@???> wrote:
> I searched google and some other search engines , also I'm FreeBSD
> fanatic and search all freebsd-isp list for this situation.
> But your right I have to ask more specific questions, but first I
> wait What type response will be back ?! I asked this question directly
> because too many people using qmail-ldap but I like exim if I can
> find out a solution with exim I will be happy.
>
> 1) Really I have to learn LDAP too, But you say with LDAP I could
> distribute data several server with Mysql or PostgreSQL we can't or
> maybe mysql cluster maybe use isn't it ? !
It's quite easy to distribute data to several servers with MySQL - either
have the slave servers consult a central database (or cluster) directly, or
replicate the database around all the servers. The replication feature in
MySQL is very robust, we've been using it for several years.
> 2) I have to search I think but I don't know which application I will
> use POP3/IMAP or Courier-imap but I don't think so give ability of
> IMAP just pop3 enough . Because When webmail is gread and local
> connectivity is growing day by day maybe IMAP .
Courier IMAP is simple to implement, and gives you flexible authentication
(LDAP, MySQL etc). If you're ever going to need IMAP, I'd suggest go
straight for Courier - use it for POP3 to begin with, and IMAP is there for
free when you need it.
> And also I asked this question to list because of How can I scale ?!
> For example qmail users can scale 1,500,000 or 2,000,000 mailbox.
So can Exim. Many discussions here on the subject, but several million
mailboxes is not unusual. You'll need to plan your hardware accordingly if
you want to scale that big, of course.
Peter
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