Tuesday, September 20, 2005

Case Sensitive E-mail Addresses

Not often do I post two entries here in quick succession that completely stump me. The earlier one about Mozilla Browsers being more vulnerable than IE and now this whole thing about the email address being case sensitive.

New York Times says:
The domain-name portion of the e-mail address - the part after the @ sign - is not case -sensitive, but the first part of the address may need to be typed in exactly as given. This rule is explained in RFC 2821, the document laying out Internet e-mail standards, found at faqs.org/rfcs/rfc2821.html.
This certainly is news to me. I never had thought that my username was case sensitive. Apparently, in most cases they aren't. The RFC2821 states:
The local-part of a mailbox MUST BE treated as case sensitive. Therefore, SMTP implementations MUST take care to preserve the case of mailbox local-parts. Mailbox domains are not case sensitive. In particular, for some hosts the user "smith" is different from the user "Smith".
But then, I am not the only one who remains in this blissful state of ignorance. Hundreds of thousands of management aspirants who filled out the CAT application forms to India's premiere B-schools just last month would have noted that the email address field had only uppercase options!

1 comment:

'Thought & Humor' said...


Hi Enginerd,

You have a riveting web log
and undoubtedly must have
atypical & quiescent potential
for your intended readership.
May I suggest that you do
everything in your power to
honor your Designer/Architect
as well as your audience.

Please remember to never
restrict anyone's opportunities
for ascertaining uninterrupted
existence for their quintessence.

Best wishes for continued ascendancy,
Dr. Howdy

'Thought & Humor'