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| author | Nicolas Vigier <boklm@mageia.org> | 2013-04-14 13:46:12 +0000 |
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| committer | Nicolas Vigier <boklm@mageia.org> | 2013-04-14 13:46:12 +0000 |
| commit | 1be510f9529cb082f802408b472a77d074b394c0 (patch) | |
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diff --git a/zarb-ml/mageia-dev/2011-September/008346.html b/zarb-ml/mageia-dev/2011-September/008346.html new file mode 100644 index 000000000..7fb7af6d9 --- /dev/null +++ b/zarb-ml/mageia-dev/2011-September/008346.html @@ -0,0 +1,192 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> +<HTML> + <HEAD> + <TITLE> [Mageia-dev] [RFC] msec (nail) can't send reports to local users accounts - require an MTA? + </TITLE> + <LINK REL="Index" HREF="index.html" > + <LINK REL="made" HREF="mailto:mageia-dev%40mageia.org?Subject=Re%3A%20%5BMageia-dev%5D%20%5BRFC%5D%20msec%20%28nail%29%20can%27t%20send%20reports%20to%0A%20local%09users%20accounts%20-%20require%20an%20MTA%3F&In-Reply-To=%3C4E7CA1FB.2030900%40arcor.de%3E"> + <META NAME="robots" CONTENT="index,nofollow"> + <META http-equiv="Content-Type" content="text/html; charset=us-ascii"> + <LINK REL="Previous" HREF="008342.html"> + <LINK REL="Next" HREF="008348.html"> + </HEAD> + <BODY BGCOLOR="#ffffff"> + <H1>[Mageia-dev] [RFC] msec (nail) can't send reports to local users accounts - require an MTA?</H1> + <B>Florian Hubold</B> + <A HREF="mailto:mageia-dev%40mageia.org?Subject=Re%3A%20%5BMageia-dev%5D%20%5BRFC%5D%20msec%20%28nail%29%20can%27t%20send%20reports%20to%0A%20local%09users%20accounts%20-%20require%20an%20MTA%3F&In-Reply-To=%3C4E7CA1FB.2030900%40arcor.de%3E" + TITLE="[Mageia-dev] [RFC] msec (nail) can't send reports to local users accounts - require an MTA?">doktor5000 at arcor.de + </A><BR> + <I>Fri Sep 23 17:12:59 CEST 2011</I> + <P><UL> + <LI>Previous message: <A HREF="008342.html">[Mageia-dev] [RFC] msec (nail) can't send reports to local users accounts - require an MTA? +</A></li> + <LI>Next message: <A HREF="008348.html">[Mageia-dev] [RFC] msec (nail) can't send reports to local users accounts - require an MTA? +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#8346">[ date ]</a> + <a href="thread.html#8346">[ thread ]</a> + <a href="subject.html#8346">[ subject ]</a> + <a href="author.html#8346">[ author ]</a> + </LI> + </UL> + <HR> +<!--beginarticle--> +<PRE>Am 23.09.2011 15:32, schrieb Frank Griffin: +><i> On 09/23/2011 06:49 AM, andre999 wrote: +</I>>><i> +</I>>><i> Currently, entering a userid alone does not work. It has to be an email +</I>>><i> address. +</I>>><i> Note however that <A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">userid at localhost</A> _is_ an email address. +</I>>><i> We could change it to accept only a valid format email address or a valid +</I>>><i> userid, in the latter case msec adding the @localhost part. IIRC, +</I>>><i> @localhost must be in a certain config file, which is the case by default. +</I>><i> +</I>><i> If you're referring to the Security panel in Summary, you certainly *can* +</I>><i> enter a userid. I regularly enter "root", and then give "root" a .forward +</I>><i> file to redirect from there. +</I>><i> +</I>><i> There seems to be some confusion between the functioning of an MUA and MTA. +</I>><i> They function identically, except that the MUA uses SMTP on behalf of a +</I>><i> single user and the MTA uses it on behalf of many users. Also, an MUA +</I>><i> receives mail for its single user by polling an MTA, while an MTA typically +</I>><i> listens for incoming connections from MUAs or other MTAs and receives +</I>><i> unsolicited mail for its many users. +</I>><i> +</I>><i> Both of them use exactly the same SMTP exchange to hand mail off to an +</I>><i> intermediate or final-destination MTA, and both of them need to be configured +</I>><i> with the information necessary to open a socket connection to that receiving +</I>><i> MTA. +</I>><i> +</I>><i> You only need an MTA on the sending system if the recipient is a user who +</I>><i> uses the sending system as its MTA. Unfortunately, that includes the case of +</I>><i> the user-to-user mail on the same system. +</I>><i> +</I>><i> So, regardless of what the RPMs require, msec really only needs an MUA that +</I>><i> is properly configured to hand mail off to the desired MTA, which can be on +</I>><i> another system entirely. The requirement for a local MTA only arises if you +</I>><i> want users on your system to be able to receive mail, whether it's sent by +</I>><i> msec or anything else. +</I>><i> +</I>><i> But in either case, you can't get around having to configure the MUA. If you +</I>><i> don't, the default config is usually to target an MTA on localhost. And the +</I>><i> default config for most MTAs when presented with a userid as an address is to +</I>><i> rewrite the address to <A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">user at localhost</A> and deliver it locally. So yes, if you +</I>><i> don't configure the MUA to use an off-host MTA, you will need an on-host +</I>><i> (localhost) MTA. If you don't have one, the MUA's response is unpredictable; +</I>><i> it may throw an error, or it may (if it has root access) put the mail in +</I>><i> /dead.letter. +</I>><i> +</I>><i> +</I>>><i> +</I>>><i> The best solution is to ensure that an MTA is always installed. +</I>>><i> +</I>><i> +</I>><i> I'd vote for that for simplicity, provided the default configuration made it +</I>><i> usable only for local delivery to minimize security implications. +</I>><i> +</I>><i> However, I think there is a better solution. MTAs all simulate the sendmail +</I>><i> API, and since sendmail is usable as an MUA as well, so are the various +</I>><i> MTAs. Real MUAs aren't that uniform. Virtually all mail reader apps use +</I>><i> their own internal MUAs to send mail, and have their own specific +</I>><i> configuration mechanisms, e.g. thunderbird, seamonkey-mail, evolution. +</I>><i> +</I>><i> In fact: +</I>><i> [<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">root at ftgme2</A> ftg]# rpm -q --whatrequires mail +</I>><i> no package requires mail +</I>><i> [<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">root at ftgme2</A> ftg]# rpm -q --whatrequires mailx +</I>><i> msec-0.80.10-2.mga1 +</I>><i> [<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">root at ftgme2</A> ftg]# rpm -q --whatrequires nail +</I>><i> lsb-core-noarch-4.1-9.mga2 +</I>><i> [<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">root at ftgme2</A> ftg]# rpm -q --whatrequires sendmail-command +</I>><i> lsb-core-noarch-4.1-9.mga2 +</I>><i> [<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">root at ftgme2</A> ftg]# rpm -q --whatrequires mail-server +</I>><i> no package requires mail-server +</I>><i> +</I>><i> So, it might be a lot cleaner if we just changed msec to do its own crippled +</I>><i> send-only MUA activities, This is really a trivial programming exercise, as +</I>><i> indicated by this comment block from a C program I wrote to do exactly this: +</I>><i> +</I>><i> ************************************************************ +</I>><i> The mail file contains SMTP commands with interspersed message +</I>><i> data, as follows: +</I>><i> HELO ... +</I>><i> MAIL FROM:... +</I>><i> RCPT TO:... +</I>><i> (repeats for each recipient) +</I>><i> DATA +</I>><i> (mail headers and body) +</I>><i> . +</I>><i> QUIT +</I>><i> +</I>><i> We open a session to the remote host's port 25, and ship each +</I>><i> of the SMTP commands, waiting for an acceptable response. The +</I>><i> "acceptable response" to each SMTP command begins with three +</I>><i> digits and ends with a CRLF. We examine only the three digits, +</I>><i> although we record the rest of the text. The acceptable +</I>><i> response for most commands is a "250"; for DATA, it is a "354", +</I>><i> and for QUIT it is a 221. We do not actually verify the +</I>><i> responses, since mailservers may vary, but simply forge on +</I>><i> unless we get an I/O error from the socket. The user should +</I>><i> be able to diagnose any errors from the transcript. +</I>><i> *********************************************************** +</I>><i> +</I>><i> That's if you do it from scratch; I have to think that perl already has +</I>><i> library support for sending mail. Of course, you'd probably not want to +</I>><i> hardcode port 25, and msec would need configuration which could be handled by +</I>><i> having a disabled entry field for host/port that gets enabled if you fill in +</I>><i> a mail recipient. +</I>><i> +</I>><i> If the host is missing, localhost, or the known host name of the local +</I>><i> machine, you'd want additional checks that something providing mail-server is +</I>><i> installed, and prompts to choose one if none is installed. +</I>><i> +</I>><i> Same support in msecgui, of course. +</I>><i> +</I>><i> +</I>><i> +</I>So, when it comes down to the 4 choices, can i sign you up for number 3? +dma is a really small MTA, requires no configuration so far and if the +user installs a full-blown MTA that one is used instead of dma. + +Or did you volunteer for the programming work on msec? ;) + + +BTW: The discussion goes on and on, so far i have only 2 conflicting votes. +We need to at least find a concensus. +</PRE> + + + + + + + + + + + + + + + + +<!--endarticle--> + <HR> + <P><UL> + <!--threads--> + <LI>Previous message: <A HREF="008342.html">[Mageia-dev] [RFC] msec (nail) can't send reports to local users accounts - require an MTA? +</A></li> + <LI>Next message: <A HREF="008348.html">[Mageia-dev] [RFC] msec (nail) can't send reports to local users accounts - require an MTA? +</A></li> + <LI> <B>Messages sorted by:</B> + <a href="date.html#8346">[ date ]</a> + <a href="thread.html#8346">[ thread ]</a> + <a href="subject.html#8346">[ subject ]</a> + <a href="author.html#8346">[ author ]</a> + </LI> + </UL> + +<hr> +<a href="https://www.mageia.org/mailman/listinfo/mageia-dev">More information about the Mageia-dev +mailing list</a><br> +</body></html> |