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diff --git a/zarb-ml/mageia-dev/2011-September/008342.html b/zarb-ml/mageia-dev/2011-September/008342.html new file mode 100644 index 000000000..e75689ee6 --- /dev/null +++ b/zarb-ml/mageia-dev/2011-September/008342.html @@ -0,0 +1,185 @@ +<!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=%3C4E7C8A63.7080503%40roadrunner.com%3E"> + <META NAME="robots" CONTENT="index,nofollow"> + <META http-equiv="Content-Type" content="text/html; charset=us-ascii"> + <LINK REL="Previous" HREF="008341.html"> + <LINK REL="Next" HREF="008346.html"> + </HEAD> + <BODY BGCOLOR="#ffffff"> + <H1>[Mageia-dev] [RFC] msec (nail) can't send reports to local users accounts - require an MTA?</H1> + <B>Frank Griffin</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=%3C4E7C8A63.7080503%40roadrunner.com%3E" + TITLE="[Mageia-dev] [RFC] msec (nail) can't send reports to local users accounts - require an MTA?">ftg at roadrunner.com + </A><BR> + <I>Fri Sep 23 15:32:19 CEST 2011</I> + <P><UL> + <LI>Previous message: <A HREF="008341.html">[Mageia-dev] [RFC] msec (nail) can't send reports to local users accounts - require an MTA? +</A></li> + <LI>Next message: <A HREF="008346.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#8342">[ date ]</a> + <a href="thread.html#8342">[ thread ]</a> + <a href="subject.html#8342">[ subject ]</a> + <a href="author.html#8342">[ author ]</a> + </LI> + </UL> + <HR> +<!--beginarticle--> +<PRE>On 09/23/2011 06:49 AM, andre999 wrote: +><i> +</I>><i> Currently, entering a userid alone does not work. It has to be an +</I>><i> email 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 +</I>><i> valid userid, in the latter case msec adding the @localhost part. +</I>><i> IIRC, @localhost must be in a certain config file, which is the case +</I>><i> by default. +</I> +If you're referring to the Security panel in Summary, you certainly +*can* enter a userid. I regularly enter "root", and then give "root" a +.forward file to redirect from there. + +There seems to be some confusion between the functioning of an MUA and +MTA. They function identically, except that the MUA uses SMTP on behalf +of a single user and the MTA uses it on behalf of many users. Also, an +MUA receives mail for its single user by polling an MTA, while an MTA +typically listens for incoming connections from MUAs or other MTAs and +receives unsolicited mail for its many users. + +Both of them use exactly the same SMTP exchange to hand mail off to an +intermediate or final-destination MTA, and both of them need to be +configured with the information necessary to open a socket connection to +that receiving MTA. + +You only need an MTA on the sending system if the recipient is a user +who uses the sending system as its MTA. Unfortunately, that includes +the case of the user-to-user mail on the same system. + +So, regardless of what the RPMs require, msec really only needs an MUA +that is properly configured to hand mail off to the desired MTA, which +can be on another system entirely. The requirement for a local MTA only +arises if you want users on your system to be able to receive mail, +whether it's sent by msec or anything else. + +But in either case, you can't get around having to configure the MUA. +If you don't, the default config is usually to target an MTA on +localhost. And the default config for most MTAs when presented with a +userid as an address is to 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 don't configure the MUA to use an +off-host MTA, you will need an on-host (localhost) MTA. If you don't +have one, the MUA's response is unpredictable; it may throw an error, or +it may (if it has root access) put the mail in /dead.letter. + + +><i> +</I>><i> The best solution is to ensure that an MTA is always installed. +</I>><i> +</I> +I'd vote for that for simplicity, provided the default configuration +made it usable only for local delivery to minimize security implications. + +However, I think there is a better solution. MTAs all simulate the +sendmail API, and since sendmail is usable as an MUA as well, so are the +various MTAs. Real MUAs aren't that uniform. Virtually all mail reader +apps use their own internal MUAs to send mail, and have their own +specific configuration mechanisms, e.g. thunderbird, seamonkey-mail, +evolution. + +In fact: +[<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">root at ftgme2</A> ftg]# rpm -q --whatrequires mail +no package requires mail +[<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">root at ftgme2</A> ftg]# rpm -q --whatrequires mailx +msec-0.80.10-2.mga1 +[<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">root at ftgme2</A> ftg]# rpm -q --whatrequires nail +lsb-core-noarch-4.1-9.mga2 +[<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">root at ftgme2</A> ftg]# rpm -q --whatrequires sendmail-command +lsb-core-noarch-4.1-9.mga2 +[<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">root at ftgme2</A> ftg]# rpm -q --whatrequires mail-server +no package requires mail-server + +So, it might be a lot cleaner if we just changed msec to do its own +crippled send-only MUA activities, This is really a trivial programming +exercise, as indicated by this comment block from a C program I wrote to +do exactly this: + +************************************************************ + The mail file contains SMTP commands with interspersed message + data, as follows: + HELO ... + MAIL FROM:... + RCPT TO:... + (repeats for each recipient) + DATA + (mail headers and body) + . + QUIT + + We open a session to the remote host's port 25, and ship each + of the SMTP commands, waiting for an acceptable response. The + "acceptable response" to each SMTP command begins with three + digits and ends with a CRLF. We examine only the three digits, + although we record the rest of the text. The acceptable + response for most commands is a "250"; for DATA, it is a "354", + and for QUIT it is a 221. We do not actually verify the + responses, since mailservers may vary, but simply forge on + unless we get an I/O error from the socket. The user should + be able to diagnose any errors from the transcript. +*********************************************************** + +That's if you do it from scratch; I have to think that perl already has +library support for sending mail. Of course, you'd probably not want to +hardcode port 25, and msec would need configuration which could be +handled by having a disabled entry field for host/port that gets enabled +if you fill in a mail recipient. + +If the host is missing, localhost, or the known host name of the local +machine, you'd want additional checks that something providing +mail-server is installed, and prompts to choose one if none is installed. + +Same support in msecgui, of course. + + +</PRE> + + + + + + + + + + + + + + + + + +<!--endarticle--> + <HR> + <P><UL> + <!--threads--> + <LI>Previous message: <A HREF="008341.html">[Mageia-dev] [RFC] msec (nail) can't send reports to local users accounts - require an MTA? +</A></li> + <LI>Next message: <A HREF="008346.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#8342">[ date ]</a> + <a href="thread.html#8342">[ thread ]</a> + <a href="subject.html#8342">[ subject ]</a> + <a href="author.html#8342">[ 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> |