El vie, 29-06-2007 a las 22:05 +0200, Sandy Drobic escribió:
Hudibras wrote:
El vie, 29-06-2007 a las 20:37 +0200, Sandy Drobic escribió:
Sorry but I don't understand much of your words... sorry! My English comprehension is bad sometimes...
Don't worry, many of the posters here don't use English as their first language. I don't either. What I meant is if you know a how-to where some of the problems are described that Qmail beginners will probably experience.
Thank you for your kindness. No. qmail beginners often experience problems. Indeed. qmail is much more simple than this.
For example: When you only define a relay domain in relay_domains in Postfix, no recipient validation is done, since the relay_recipient_maps parameter is empty. Of course, the documentations tells you to set up relay_recipient_maps, but as a beginner you might forget to do so.
qmail treats all domains included in a simple text file as locals, so *only* these domains can relay. I insist on it: qmail is much more simple and easy than all of that options in sendmail or postfix. I hope this will be a true explanation of your question...
release. That is not important. I assure you I have used Postfix and I missed mails, because of smtp deliveries if some cases. However that thing never happened with qmail, independently the type of delivery, domain existance or not, etc. That is also what I am looking for. Can you remember under what circumstances it happened and how long ago (which Postfix version)?
Uf... I'll try to explain as good as possible in my bad English. As smtp local server, I tried to send mails and none of them reached its target; qmail does: it sends any mail I want it does, even with "fake" accounts, with my regular MUA.
Did you find out the reason? Postfix logs everything, so you should be able to find the cause of the problem.
No. I didn't find anything: the only real thing is that all those messages were missed forever.
The only situation where I definitely lost a mail was, when I severely misconfigured my machine: I send the mail to a nonexisting recipient address. Okay, so Postfix tries to bounce the mail back to the sender address. Unfortunately, I also used a nonexisting sender address. In that case, Postfix sends the undeliverable mail to the 2bounce recipient (postmaster). Well, you might guess it, postmaster wasn't set to a valid address either. (^-^)
No. Look. In the worst circumstances, qmail never missed a message, even though it was a very crazy mail. I can always retrieve that, deleted from queue, etc. qmail always send a *copy* of the message, and deletes it only if message has been successed in the counterpart.
The result was, that Postfix finally deleted the undeliverable mail out of the queue. So it took some real effort to lose the mail. That was in the very beginning, when I started to learn about Postfix and send a few testmails. At least I could reconstruct what happened in the log.
Grin! If Postfix has (copied) all those features you like I don't need to learn Qmail. (^-^)
Ha, ha, ha... sharp!
Of course, why would I spend so much time just to do things a different way? If I don't gain something I don't have yet, it is not worth the effort.
Uh, which one? The only one I can remember was a TLS problem for Postfix 2.1. At that time Postfix itself had no own TLS implementation, so the support was added with a 3rd party patch. That was also origin of the security bug.
Sorry, I can't remember: my memory is not as good as for remembering every issue with all programs I don't use... But I can recall several holes.
Since I do use Postfix I do monitor the security lists closely, and I can't recall any security exploit for Postfix aside of the mentioned third-party patch.
That is exactly my point. I like to learn new things, but I also like to know what I am about to start, especially when I decide to learn a new MTA. A good start is important. What mailinglist/website would you recommend for a QMail beginner?
First, to install qmail/vpopmail, www.shupp.org/toaster And then, if you like, there are many mailinglist and websites to find for information. But I assure you if you install qmail, you won't need anything, because you will forget you have a MTA installed and working.
Where are good sites with accurate documentations and how-tos? I just saw http://cr.yp.to/qmail.html, which had some nice information, though it seemed a bit old (they were talking about the situation in 2001).
Yes, this is the "strange" Dan Bernstein site: the beginning of all, but shupp.org wil be definitive for you. It's easier than done. Other, www.inter7.com, and much more.
I'll take a look at them. As it happens, I just read a request for help in the German opensuse list. He is looking for a mailing list on Qmail. Can you recommend one for him? For the moment, I refered him to http://www.mail-archive.com/toaster@shupp.org/info.html.
He is trying to find out how to add a custom header (x-original-recipient) to each mail. I know how to do this in Postfix, but not with QMail.
I must say pop mail server was the only thing makes me use qmail, because the typical "popper" is definitely bad (in my opinion, anyway). After that, all my servers intallations, after having sendmail and postfix and deleted it them, all customers phoned and saying surprised: "Why mail goes now so faster and so good, have you changed anything?" And I don't lie. Every time I did, people praised the new service. And I can say they have been many times.
I don't use POP3, I am very happy with Cyrus (IMAP). So mail is passed from Postfix to Cyrus. The resource usage by Postfix on the Server is negligible, the deciding factor on resource consumption is always the imap server (in my case Cyrus).
Yes. I do use imap too (in fact, courier-imap); but I can do pop3 and imap at the same time with qmail; only the MUA configuration and preferences makes the personal choice. It's the thing I can tell you. My English level is not as good as a discussion... And I want to repeat: all customers sang aleluyas when they noticed mail service was *really working* and was much faster and reliable than before. I was really tired with qpopper and that really annoying configuration of boxes, alltogether in a single file. This is prehistoric! I installed qmail and life of customers became bright back. All my servers installed are still there!!! From 2001... till now. Working everyday; maybe only updated the imap server, or the webmail (from qmailadmin to Squirrel, for instance), but any more. The main qmail server is still working, with a deal of charge from nearly 1000 enterprises or more around the world. For qmail the only limit is hardware, not the service itself. Cheers, Alejandro.
-- Sandy
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