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RE: domain name definition in RFC2821

2006-04-22 11:23:20

Thank you all for very insightful discussion.

My conclusion for the initial question is that we need to fully support 
single-component domain names and ABNF production in RFC2821 is an error. 
Supporting single-component domain names should not be a problem as long as it 
is clear from the context that this is indeed FQDN and not an abbreviation.

For the trailing dot in a domain name, I understand that accepting it can be 
desirable, although it is legal/fine to be stricter and reject such domain 
names as invalid. Of course it must never be produced.

Please let me know if my interpretation is incorrect.

Yuri Inglikov

-----Original Message-----
From: John C Klensin [mailto:john+smtp(_at_)jck(_dot_)com]

Ack.  Unless others disagree with Ned's (IMO extremely coherent)
analysis, I'll pull the changes out of 2821bis.