IDN domain name support
in [Postfix]
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From: Alejandro Cabrera Obed on 26 May 2010 14:11 Dear all, I live in Argentina and now we can use the à letter in our domain names. I have a mail system conformed with Debian Lenny / Postfix 2.5.5-1.1. My question is this: Does Postfix 2.5.5-1.1 support IDN domain names in case I create a @ñoño.com.ar domain ??? Or is it a problem inherent only to mail clients like Outlook, Thunderbird, etc. ??? Special thanks Alejandro
From: Victor Duchovni on 26 May 2010 14:29 On Wed, May 26, 2010 at 03:11:41PM -0300, Alejandro Cabrera Obed wrote: > Dear all, I live in Argentina and now we can use the ?? letter in our > domain names. I have a mail system conformed with Debian Lenny / > Postfix 2.5.5-1.1. > > My question is this: > > Does Postfix 2.5.5-1.1 support IDN domain names in case I create a > @??o??o.com.ar domain ??? Or is it a problem inherent only to mail > clients like Outlook, Thunderbird, etc. ??? Displaying IDN domain names is a client-only issue. Postfix works with ASCII on-the-wire "xn-<punycode>" names. Even in bounce messages, where Postfix could arguably process IDN names, it is far from clear that making bounces only readable by people who can read Chinese, Arabic, Russian, ... is a good idea. It is best to rely on MUAs display the structured bounce in the most appropriate way. -- Viktor.
From: Alejandro Cabrera Obed on 26 May 2010 15:03 Thanks Viktor, sorry but I don't understand this: you say Postfix works with ASCII on-the-wire, so if in my Postfix I create a virtual domain called "ñandu.gov.ar" you tell me that Postfix will automatically encoded it to Punycode and resulting the domain: xn--andu-fqa.gov.ar ???? So I can create IDN domain names in my Postfix, and now my unique objective is ensure that mail clients (MUA's) work with IDN names and anymore ??? Thanks again !!!! Alejandro 2010/5/26 Victor Duchovni <Victor.Duchovni(a)morganstanley.com>: > On Wed, May 26, 2010 at 03:11:41PM -0300, Alejandro Cabrera Obed wrote: > >> Dear all, I live in Argentina and now we can use the ?? letter in our >> domain names. I have a mail system conformed with Debian Lenny / >> Postfix 2.5.5-1.1. >> >> My question is this: >> >> Does Postfix 2.5.5-1.1 support IDN domain names in case I create a >> @??o??o.com.ar domain ??? Or is it a problem inherent only to mail >> clients like Outlook, Thunderbird, etc. ??? > > Displaying IDN domain names is a client-only issue. Postfix works > with ASCII on-the-wire "xn-<punycode>" names. > > Even in bounce messages, where Postfix could arguably process IDN names, > it is far from clear that making bounces only readable by people who can > read Chinese, Arabic, Russian, ... is a good idea. It is best to rely > on MUAs display the structured bounce in the most appropriate way. > > -- >     Viktor. > -- Alejandro Cabrera Obed aco1967(a)gmail.com www.alejandrocabrera.com.ar
From: Wietse Venema on 26 May 2010 16:30 Alejandro Cabrera Obed: > Dear all, I live in Argentina and now we can use the ? letter in our > domain names. I have a mail system conformed with Debian Lenny / > Postfix 2.5.5-1.1. > > My question is this: > > Does Postfix 2.5.5-1.1 support IDN domain names in case I create a > @?o?o.com.ar domain ??? Or is it a problem inherent only to mail > clients like Outlook, Thunderbird, etc. ??? Mail clients must translate non-ASCII domain names into punycode (xn-mumble) format before issuing SMTP commands (MAIL FROM, RCPT TO). Wietse
From: Alejandro Cabrera Obed on 26 May 2010 16:53
Wietse, thanks...but in Postfix I have to work with the ñoño.com.ar domain name or with the xn--oo-yjab.gov.ar punycode domain name ??? For example, in my mail server I define my virtual domains in /etc/postfix/vmaildomains. How di I have to define it: ñoño.com.ar required or xn--oo-yjab.gov.ar required ????? The same for the Maildir paths, do they have to be under: /var/vmail/ñoño.com.ar/user/Maildir or /var/vmail/xn--oo-yjab.gov.ar/user/Maildir ???? Thanks a lot Alejandro 2010/5/26 Wietse Venema <wietse(a)porcupine.org>: > Alejandro Cabrera Obed: >> Dear all, I live in Argentina and now we can use the ? letter in our >> domain names. I have a mail system conformed with Debian Lenny / >> Postfix 2.5.5-1.1. >> >> My question is this: >> >> Does Postfix 2.5.5-1.1 support IDN domain names in case I create a >> @?o?o.com.ar domain ??? Or is it a problem inherent only to mail >> clients like Outlook, Thunderbird, etc. ??? > > Mail clients must translate non-ASCII domain names into punycode > (xn-mumble) format before issuing SMTP commands (MAIL FROM, RCPT TO). > >     Wietse > -- Alejandro Cabrera Obed aco1967(a)gmail.com www.alejandrocabrera.com.ar |