Re: Rejecting Certain Non-ASCII Characters

Message-ID	<1708560.gf3Q74PF4m@PointedEars.de> (permalink)
From	Thomas 'PointedEars' Lahn <PointedEars@web.de>
Organization	PointedEars Software (PES)
Date	2013-04-22 14:10 +0200
Subject	Re: Rejecting Certain Non-ASCII Characters
Newsgroups	comp.lang.php, news.admin.net-abuse.usenet
References	(2 earlier) <4433483.hWCz3MVrGr@PointedEars.de> <atffreFo8fpU1@mid.uni-berlin.de> <51728CE8.7010404@arnowelzel.de> <atfrchFqpq0U1@mid.uni-berlin.de> <kkv3ha$e21$1@dont-email.me>
Followup-To	news.admin.net-abuse.usenet

Cross-posted to 2 groups.

Followups directed to: news.admin.net-abuse.usenet

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Denis McMahon wrote:

> What you have defined locally is irrelevant.

ACK.

> Internet domains do not exist unless their tld is registered with the
> internet GTLD root servers, and there is a dns query path to the relevant
> domain nameserver from the internet GTLD root servers.

Some exist even without being registered that way, though:

> If you must obscure your email address, I suggest you use
> email@example.com instead.

That would be a violation of RFC 5536 by everyday (mis)use of the 
“example.com” SLD.  That domain, and the “example” TLD, are for *examples*, 
not address munging.  See RFC 2606.

> Using <something>@invalid.invalid is just as
> bad as using any other made up domain name. (see <http://www.iana.org/
> domains/special> )

Some NetNews providers argue that it is technically correct, as because of

,-<http://tools.ietf.org/html/rfc2606>
| 
|       ".invalid" is intended for use in online construction of domain
|       names that are sure to be invalid and which it is obvious at a
|       glance are invalid.

there cannot be a mailbox there.

However, the TLDs defined in RFC 2606 are not for address munging; they are 
“for Testing, & Documentation Examples”.  The example SLDs in defined in RFC 
2606 are not for address munging either; they “can be used as examples” 
only.  And the current (2009) NetNews RFC does not allow them:

,-<http://tools.ietf.org/html/rfc5536#section-3.1.2>
| 
| 3.1.2.  From
| 
|    The From header field is the same as that specified in Section 3.6.2
|    of [RFC5322], with the added restrictions detailed above in
|    Section 2.2.
| 
|    from            =  "From:" SP mailbox-list CRLF

That is, added *restrictions*, _not_ added freedoms.

Because using “.invalid” (or another of those domains) in a *pseudo*-address 
(RFC 5322, since at least RFC 2822: “a mailbox *receives* mail”) prevents
e-mail communication in a non-obvious way (especially to non-English 
speakers), whereas e-mail communication *is* important to keep Network news 
clean of one-to-one communication (to clarify misunderstandings before they 
evolve into flamewars; to give technical or other advice that nobody in the 
group should know or care about; to arrange for personal meetings; to offer 
jobs because of obvious technical expertise; etc.), it is still considered 
anti-social behavior and is subject to killfile rules.

Use it for postings that you want to be read (by knowledgable people), *at 
your own risk*; consider that not being read (by knowledgable people) on 
NetNews is equivalent to not participate in NetNews at all.

> postmaster@localhost is of course another possibility, and should be
> valid everywhere.

Nonsense.  Because it specifies a different mailbox everywhere, *if at all*, 
it is _not_ Valid.  “localhost” is _not_ a *Fully Qualified* *Domain Name*.  
It is the *hostname* for 127.0.0.1 by default.  Unless you are running an 
MTA on the computer you are reading NetNews with, there cannot be such a 
mailbox.  And then it will be *your* mailbox you would send e-mail to, not 
the author of the posting.

Use that ”address” to annoy people to no end by spamming themselves (worst 
case scenario is a bounce days later, or an unexpected log file entry) when 
they are trying to give you friendly off-group advice (or in any of the 
aforementioned scenarios).

See also: <http://www.interhack.net/pubs/munging-harmful/>

The paper may be old, but its arguments are still valid.  Address munging in 
any way is *helping* spammers, and *hurting* the NetNews community, 
including and firstly oneself.  IOW, address munging is one of the most 
stupid things you can do.

X-Post & F'up2 news.admin.net-abuse.usenet

PointedEars 
-- 
Use any version of Microsoft Frontpage to create your site.
(This won't prevent people from viewing your source, but no one
will want to steal it.)
  -- from <http://www.vortex-webdesign.com/help/hidesource.htm> (404-comp.)

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Thread

Rejecting Certain Non-ASCII Characters Jim Higgins <ILikeMy@Privacy.bogus> - 2013-04-19 16:16 +0000
  Re: Rejecting Certain Non-ASCII Characters Lew Pitcher <lpitcher@teksavvy.com> - 2013-04-19 12:29 -0400
  Re: Rejecting Certain Non-ASCII Characters Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2013-04-19 09:30 -0700
    Re: Rejecting Certain Non-ASCII Characters Jim Higgins <ILikeMy@Privacy.bogus> - 2013-04-19 21:38 +0000
      Re: Rejecting Certain Non-ASCII Characters Jim Higgins <ILikeMy@Privacy.bogus> - 2013-04-19 22:11 +0000
  Re: Rejecting Certain Non-ASCII Characters Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-19 12:48 -0400
    Re: Rejecting Certain Non-ASCII Characters Jim Higgins <ILikeMy@Privacy.bogus> - 2013-04-19 21:46 +0000
      Re: Rejecting Certain Non-ASCII Characters Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-19 18:00 -0400
      Re: Rejecting Certain Non-ASCII Characters Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-04-20 01:23 +0200
  Re: Rejecting Certain Non-ASCII Characters Christoph Becker <cmbecker69@gmx.de> - 2013-04-19 19:38 +0200
    Re: Rejecting Certain Non-ASCII Characters Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-04-19 22:33 +0200
      Re: Rejecting Certain Non-ASCII Characters Christoph Becker <cmbecker69@gmx.de> - 2013-04-19 23:08 +0200
        Re: Rejecting Certain Non-ASCII Characters Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-04-20 01:12 +0200
          Re: Rejecting Certain Non-ASCII Characters Christoph Becker <cmbecker69@gmx.de> - 2013-04-22 13:25 +0200
            Re: Rejecting Certain Non-ASCII Characters Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-04-22 13:29 +0200
        Re: Rejecting Certain Non-ASCII Characters Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-04-20 14:08 +0200
          Re: Rejecting Certain Non-ASCII Characters Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-04-20 17:52 +0200
    Re: Rejecting Certain Non-ASCII Characters Jim Higgins <ILikeMy@Privacy.bogus> - 2013-04-19 22:06 +0000
      Re: Rejecting Certain Non-ASCII Characters Christoph Becker <cmbecker69@gmx.de> - 2013-04-20 00:26 +0200
        Re: Rejecting Certain Non-ASCII Characters Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-19 19:53 -0400
          Re: Rejecting Certain Non-ASCII Characters Christoph Becker <cmbecker69@gmx.de> - 2013-04-20 02:36 +0200
            Re: Rejecting Certain Non-ASCII Characters Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-19 20:58 -0400
              Re: Rejecting Certain Non-ASCII Characters Christoph Becker <cmbecker69@gmx.de> - 2013-04-20 03:34 +0200
  Re: Rejecting Certain Non-ASCII Characters Arno Welzel <usenet@arnowelzel.de> - 2013-04-19 22:19 +0200
  Re: Rejecting Certain Non-ASCII Characters "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-04-20 10:04 +0200
    Re: Rejecting Certain Non-ASCII Characters Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-04-20 14:15 +0200
      Re: Rejecting Certain Non-ASCII Characters "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-04-20 14:26 +0200
        Re: Rejecting Certain Non-ASCII Characters Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-04-20 14:34 +0200
        Re: Rejecting Certain Non-ASCII Characters Arno Welzel <usenet@arnowelzel.de> - 2013-04-20 14:41 +0200
          Re: Rejecting Certain Non-ASCII Characters Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-20 08:43 -0400
            Re: Rejecting Certain Non-ASCII Characters Arno Welzel <usenet@arnowelzel.de> - 2013-04-20 14:55 +0200
              Re: Rejecting Certain Non-ASCII Characters Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-20 09:04 -0400
                Re: Rejecting Certain Non-ASCII Characters Arno Welzel <usenet@arnowelzel.de> - 2013-04-20 21:29 +0200
                Re: Rejecting Certain Non-ASCII Characters Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-20 20:03 -0400
                Re: Rejecting Certain Non-ASCII Characters Arno Welzel <usenet@arnowelzel.de> - 2013-04-21 06:51 +0200
                Re: Rejecting Certain Non-ASCII Characters Arno Welzel <usenet@arnowelzel.de> - 2013-04-21 06:57 +0200
                Re: Rejecting Certain Non-ASCII Characters Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-21 08:45 -0400
                Re: Rejecting Certain Non-ASCII Characters Tim Streater <timstreater@greenbee.net> - 2013-04-21 15:09 +0100
                Re: Rejecting Certain Non-ASCII Characters Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-21 10:29 -0400
                Re: Rejecting Certain Non-ASCII Characters Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-21 08:44 -0400
              Re: Rejecting Certain Non-ASCII Characters The Natural Philosopher <tnp@invalid.invalid> - 2013-04-20 15:07 +0100
                Re: Rejecting Certain Non-ASCII Characters Jerry Stuckle <jstucklex@attglobal.net> - 2013-04-20 20:06 -0400
          Re: Rejecting Certain Non-ASCII Characters "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-04-20 17:43 +0200
            Re: Rejecting Certain Non-ASCII Characters Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-04-20 18:01 +0200
              Re: Rejecting Certain Non-ASCII Characters "M. Strobel" <sorry_no_mail_here@nowhere.dee> - 2013-04-20 18:17 +0200
                Address munging (was: Rejecting Certain Non-ASCII Characters) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-04-20 18:23 +0200
            OT: Address munging (was: Re: Rejecting Certain Non-ASCII Characters) Arno Welzel <usenet@arnowelzel.de> - 2013-04-20 21:25 +0200
            Re: Rejecting Certain Non-ASCII Characters Denis McMahon <denismfmcmahon@gmail.com> - 2013-04-20 22:06 +0000
              Re: Rejecting Certain Non-ASCII Characters Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-04-22 14:10 +0200

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