[LINK] RFC: emailing to <username>@<IP-Address>

[Roger Clarke]

At 18:58 +0100 10/12/07, Kim Holburn wrote:
>This is on Page 37 of http://www.ietf.org/rfc/rfc2821.txt
>
>       address-literal = "[" IPv4-address-literal /
>                             IPv6-address-literal /
>                             General-address-literal "]"
>             ; See section 4.1.3
>
>Many modern email servers will simply reject this but it is part of the RFC.

Very handy on-link and off-link feedback thanks everyone!

I posted a version of the above to my class (with some background 
info, in order to help the less technical people in the group tune 
in).

The tutor politely agreed, but added:

FYI, another reference is in Section 6.2.3 in RFC822, 
http://www.ietf.org/rfc/rfc822.txt:

*******************
Domain-literals which refer to domains within the ARPA  Internet 
 specify  32-bit  Internet addresses, in four 8-bit fields noted in 
decimal, as described in Request for  Comments  #820, "Assigned 
Numbers."  For example:

[10.0.3.19]

Note:  THE USE OF DOMAIN-LITERALS IS STRONGLY DISCOURAGED.  It is 
 permitted  only  as  a means of bypassing temporary system 
limitations, such as name tables which are not complete.
********************

-- 
Roger Clarke                  http://www.anu.edu.au/people/Roger.Clarke/
			            
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Visiting Professor in Info Science & Eng  Australian National University
Visiting Professor in the eCommerce Program      University of Hong Kong
Visiting Professor in the Cyberspace Law & Policy Centre      Uni of NSW