Integrating Postfix + Amavisd-new + Clamav + DSpam + DBmail
hoschi at mouhaha.de
Tue Jul 17 22:34:42 UTC 2007
On Wed, Jul 18, 2007 at 01:22:34AM +0545, Tek Bahadur Limbu wrote:
> Oliver Peter wrote:
> >On Sun, Jul 15, 2007 at 05:21:49PM +0545, Tek Bahadur Limbu wrote:
> >I would like to switch back to a filesystem based e-mail backend
> >(maybe dovecot) - feels better to me. Furthermore I think that dbmail
> >has no good pgsql support (it has some bugs with IMAP) -
> >maybe you would like to try mysql instead (*hirgs*).
> I think that I may have to switch back to Mysql then. I heard that
> PostgreSQL is more scalable than Mysql. But I am not an experienced
> database user, so, please forgive my little knowledge.
Personally I prefer PostgreSQL. It works great for me.
In my opinion MySQL is to Postgres like Linux to FreeBSD :)
I had a little problem with dbmail and pgsql:
I haven't tried the new version yet.
> Why do you want to switch back to to a filesystem based e-mail backend?
> I suppose storing emails in a database should be more scalable and
> flexible in the long run?
Since I'm the only active user of my dbmail setup it's too oversized
for this purpose. I think I can live with a small filesystem based
postfix setup, too.
Of course it will be more flexible in the long run but I have only a
1,2ghz machine as my main mailserver - simply it is too slow.
> >If you would like I can show you my configuration files and table
> Of course, I would like to see your configuration files. In fact, I am
> dying to see it.
Hehe, no problem. You will get them tomorrow. Promised.
> I am planning my current setup to be used for a long term basis in a
> production environment for a very large user base.
> Me and my team are currently just designing and testing it out. It might
> take some time before we can put this server in production.
> Since I am very new to database terminology, how scalable is a database
> in terms of the data storage size. I mean suppose, we have 20000 users
> each with a quota of 1 GB. What will eventually happen if they all used
> up their quotas. That will be about 20 TB in size!!
w00t - as you can see I'm just a little sysadmin managing his very own
small mailserver. I never thought about thousands of user - I never
thought about to have more than 10 user. Hehe.
Well, if you will have such a huge load Postgres would be the best
choice for you. As far as -> I <- know it has better methods
regarding failover, master- and slaveserver and of course db clusters.
I think one main 'problem' with dbmail will be that if your db crashes
or stops working EVERYTHING is lost. You don't have these problems
in this dimension with a filesystem based mailsystem. Primarily you
will have to find a good backup/failover solution for your database -
regardless of what system you will use (pgsql, mysql, oracle,
mssql... SQLlite ...)
> Thanking you...
Let's see if my small setup will help you tomorrow. I will get in
touch with you.
Oliver PETER, email: hoschi at mouhaha.de, ICQ# 113969174
"Worker bees can leave. Even drones can fly away. The Queen is their slave."
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