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From: Cip (mdk-list_at_paragliders.ro)
Date: Wed Aug 14 2002 - 09:47:54 CDT
> Firstly, I would like to see what comments the postfix mailing list
> would have on this (since there are some very knowledgeable people
> there, a lot of whom run postfix for performance reasons).
I'm also waiting for some comments about postfix...
> Also, you should be comparing apples against apples, and compile all
> software with the same compiler flags, since qmail may have an
> advantage from not being compiled with probably more conservative
> default flags for Mandrake.
Well, if you will read about my test rules, I decided to test only RPM.
However, we know about Qmail policy... I think I can have a test for
Qmailís rpms from rpmhelp.net. I have some tests with qmail rpm but on
different machine.If Iíll start compiling these packages, Iíll in a BIG trouble: every mail
server may have so MANY options and so many options... So I decided to use
what (I think) the most people use: the default rpm from distribution. If
they donít have any rpm in Mandrake Cd, I think they will compile Qmail
(because this guys know about security and about speed and they want to
sleep well ;o).
> Secondly, I suspect the speed advantage of maildir has a greater impact
> when people read email, so it would be nice to see a benchmark of
> things like uw-imap (which we run on our own machine currently since
> we have mail in mbox) and courier-imap (which I have on client
> machines) and cyrus-imap (which isn't in the distro, and maybe should
> be, but who knows until we can see how it does).
Uíre right, but THAT is a different benchmark. Iím thinking about that.
For Postfix, I can say that the performances are worse (!!!) using Maildir
instead of mailbox and procmail. Strange but true.
> Of course, a lot of this is overshadowed by virus scanning (for those
> who have windows machines behind the mail server). We upgraded our mail
> server from a 166MMX (which handled everything except virus scanning
> with ease) to a 800 celeron (which manages ok now) just because of
> virus scanning.
I also have some experience with mail antivirus. For now I can say that
the first antivirus tested by me is slowing the mail serverís speed by 50%
or more.When Iíll have enough experience with at least 2 antivirus products, Iíll
publish my findings.
Iím not sure I want to subscribe ti the Postfix list (I already have SO
MANY lists to read). However, if Iíll do that, Iíll have to subscribe to
Sendmail and Qmail lists (just to be right). I think this test is Mandrake
related more than Sendmail, Qmail, Postfix related. I am sure that Postfix
(or mail, sendmail) will ask me to recompile the servers and try again
these tests. Iím not sure I have time for this.The reason Iíve started this project is that I couldnít fin any place on
Internet with this kind benchmarks. We will se if it is interesting enough
to invest more time in it.
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