Re: mail server w/ 65000++ users
On Mon, 15 May 2000, Russell Coker wrote:
> On Mon, 15 May 2000, Robert Varga wrote:
> >Use qmail and vpopmail. They are both packaged to debian, so there should
> >not be much of a problem for it.
>
> Qmail isn't a regular package because it's got licence issues.
>
It is in debian in source package form, it can be built with one command,
so it is not a real problem I think.
> Also Qmail is lacking in functionality when compared to Postfix, Sendmail, or
> probably any other Unix mail server. Qmail is fast and reliable, it's good
> for installing for one of those clients who is expected to stuff up Postfix
> config files.
I did not really find any lacking functionality for my needs currently,
and we are using it as an ISP customer mailserver and as a company
mailserver as well.
>
> For a serious server system it will rapidly become annoying for the
> administrator because it just won't do the things you want.
>
> Try spam blocking (both ORBs and header filtering) and address re-writing for
> two things that Qmail falls down on.
Address rewriting: look at the mess822 package on DJB's homepage, for one.
For address rewriting in messages originating on the qmail host, it is
even easier than that. You just need to wrap qmail-inject. I have done it
and it is not that hard to do.
SPAM blocking: it is not that hard to do, the biggest problem is always
the algorithm and patterns you filter on.
>
> >Mails are stored in maildir format, which is NFS-safe without the need of
> >locking.
>
> Postfix does this too.
>
> >I have no experience with Postfix myself, but qmail is regarded as the
> >fastest and most secure mailserver, and I think it is much easier
> >configurable than sendmail or exim. I really have no problem with it
> >myself.
>
> Being easier to configure than Sendmail is an understatement. Sendmail is
> the hardest to configure and Qmail is the easiest.
>
> I doubt that Qmail is any more secure than Postfix. I doubt that it is any
> faster.
>
It can be said the other way round as well. I don't personally know
postfix, but I don't think it would be faster than qmail. About security:
there is one thing with postfix: it is under current development, ergo it
always can contain newly introduced security holes. Of course that also
means fast error fixes, however. Qmail is unfortunately not under visible
development, no one knows what DJB does currently with qmail.
The licencing is the biggest drawback in qmail I think.
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