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Re: Qmail vas Sendmail



Hi!

There's some notes about qmail:

* Not a great deal speed improvement
* Lacks most of options sendmail has
* Doesn't REALLY improve security, though better than sendmail in this
issue
* not-so-compatible
* Not used for serious businesses
* Obscure for ex-sendmail users

So, I'll stick to sendmail meanwhile at work, and I already use VMAiler
(pre alpha) at home, which is copletely useful.

Regards,
Roman

On Sat, 15 Aug 1998, Shachar Tal wrote:

> Hi,
> 
> I've been running Qmail for the past 2 years, with excellent results. I've
> never experienced a problem with it, except once (which I'll describe
> later). Recently, I've installed Qmail on a server in the Technion which
> will be the Technion mail gateway (well, for most of the Technion) and I
> have had quite a few surprises with its performance. It doesn't crumble
> under heavy loads, and you can safely assume that the amount of email
> messages that goes through it now is very large (hundreds of thousands a
> day, I'd say, if not more).
> 
> If you're very intrested in performance, take a look at the README files
> that come with the distribution. 
> 
> One note: If Qmail has a lot of deliveries done, it writes a log to the
> log file, and syslog starts sync'ing continuously resulting in high CPU
> and disk load.
> 
> Solution: add a hyphen in front of the mail log filename in syslog.conf
> 
> The one problem I've had with it is that I tried to move the queue across
> disks and I've (saddeningly) found out that the files in the queue have an
> inone-dependant filename. I had to wait till the queue empties itself
> before moving to a new disk. Defrag utilities' users, watch out. The
> author promised a tool for moving queues around in version 1.03.
> 
> One more note: The pop3 server that comes with Qmail handles $HOME/Maildir
> maildir mailboxes ONLY. If you wish to use the good old mbox format (which
> I recommend, due to lack of support in MUAs), get Qualcomm's qpopper and
> make modifications. I have a diff output available if anyone needs it.
> 
> Summary: Use it. I found nothing wrong about it. It has a few
> configuration files, though, so it has a learning curve for sendmail
> users, but the curve isn't steep and is very short, so I'd recommend doing
> that. Value-added stuff: better aliases support, user-definable mailing
> list support, supports procmail, .forward and everything else you're used
> to. For mailing lists under Qmail I'd recommend ezmlm.
> 
> You can get the latest version from
> ftp://ftp.rifkin.technion.ac.il/pub/qmail
> 
> Shachar.
> 
> 
> Shachar Tal
> -------------
> Taub Computer Center, Technion, Israel Institute of Technology
> KeyID 0481FEF1 fingerprint = 52 1B 97 6A F2 77 AE C6  64 B6 5A 5E 14 28 8E 7E
> 
> 

--Roman Shterenzon
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