Search Again: Re: Case question From: Men & Mice Support Date: Thursday, October 11, 2001 Time: 9:25:39 am At 10:59 AM -0500 10/11/01, Len Conrad wrote: >>I'd be interested to know if this is addressed. > >it is > > > So, is case-sensitivity addressed in any RFC? > >start with RFC822 at www.networksorcery.com : > >3.4.7. CASE INDEPENDENCE > >Except as noted, alphabetic strings may be represented in any >combination of upper and lower case. > >The only syntactic units which requires preservation of case information are: > >- text >- qtext >- dtext >- ctext >- quoted-pair >- local-part, > >except "Postmaster" > >When matching any other syntactic unit, case is to be ignored. For >example, the field-names "From", "FROM", "from", and even "FroM" are >semantically equal and should all be treated identically. > >When generating these units, any mix of upper and lower case >alphabetic characters may be used. The case shown in this >specification is suggested for message-creating processes. > >Note: The reserved local-part address unit, "Postmaster", is an >exception. When the value "Postmaster" is being interpreted, it must >be accepted in any mixture of case, including "POSTMASTER", and >"postmaster". >------------------------- > >Any Internet mail server with case dependence in email addresses is broken. Read it again. "The only syntactic units which requires [sic] preservation of case information are... local-part, except "Postmaster"". The definition of a "local-part" is given in section 6.1 of that same RFC, and can be summarized as the part of the email address before the @. Therefore, an email address can be case sensitive before the @ unless it is the postmaster account. After the @ comes the domain name part, which is not case sensitive. ____________________________________________________________________ Chris Buxton Men & Mice cbuxton@menandmice.com Making DNS Easy

Messages In This Thread: Case question by Mia''s Virtual Post Office on Sep 24, 2001 at 2:06:35 pm Re: Case question by Len Conrad on Sep 24, 2001 at 2:23:06 pm Re: Case question by Mark Hartman on Sep 24, 2001 at 2:34:55 pm Re: Case question by Mia''s Virtual Post Office on Sep 24, 2001 at 2:58:08 pm Re: Case question by Warren Michelsen on Oct 8, 2001 at 7:33:27 am Re: Case question by Len Conrad on Oct 8, 2001 at 11:44:32 am Re: Case question by Len Conrad on Oct 11, 2001 at 9:01:18 am Re: Case question by Warren Michelsen on Oct 11, 2001 at 9:11:17 am Re: Case question by Men & Mice Support on Oct 11, 2001 at 9:25:39 am Re: Case question by Len Conrad on Oct 11, 2001 at 9:49:35 am Re: Case question by Len Conrad on Oct 11, 2001 at 9:55:03 am Re: Case question by Men & Mice Support on Oct 11, 2001 at 10:20:04 am Re: Case question by Warren Michelsen on Oct 12, 2001 at 9:11:35 am Re: Case question by Warren Michelsen on Oct 12, 2001 at 9:14:07 am Re: Case question by Mark Hartman on Oct 12, 2001 at 9:26:46 am