I said "in general"
-teD Original Message From: Paul Gilmartin Sent: Wednesday, February 3, 2016 13:33 To: IBM-MAIN@LISTSERV.UA.EDU Reply To: IBM Mainframe Discussion List Subject: Re: Lower ibm-main On 2016-02-03, at 05:43, Ted MacNEIL wrote: > In general, e-mail servers are case insensitive. > But originating MUAs and MTAs must not assume that. By Internet standard, domain names are case-insensitive, however, from RFC822: 6.2.4. DOMAIN-DEPENDENT LOCAL STRING The local-part of an addr-spec in a mailbox specification (i.e., the host's name for the mailbox) is understood to be whatever the receiving mail protocol server allows. For exam- ple, some systems do not understand mailbox references of the form "P. D. Q. Bach", but others do. (It makes clear elsewhere that the quotation marks must appear in the mailbox reference.) And, again, originating MUAs and MTAs must honor the requirement. Too many fail to do so. Address book utilities are even worse. And I and a local website developer learned to his dismay that in the url: mailto://mail...@somehere.com ... the slashes must be preserved in the mailbox reference (RFC 1738) Alas, popular browsers delete them (improperly); popular MUAs preserve them (properly). But if those popular browsers were brought into conformance with RFC 1738 it would "break" (in a Pickwickian sense) vast quantities of defective HTML. I strongly disagree with half of Postel's Principle. But, if the ua.edu server treats mailbox references as case-insensitive, who cares how they appear in IBM-Main? -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
