Capitalization of domain names

[Barry Margolin]

In article <37AEE1EE.47EC4047 at samara.co.zw>,
David Kelly  <david at samara.co.zw> wrote:
>Hi,
>
>I have had a problem sending mail (via sendmail 8.9.3) to a domain that
>has its primary mail exchanger listing in mixed case.
>
>i.e. Mail.domain.com
>
>My mail server attempts to resolve the domain "mail.domain.com" and
>gives a "host unknown" error. Anyone come across this before or know
>what might cause this?

Sounds like a bug in your mail server or your DNS server, because DNS is
supposed to be case-insensitive (case is preserved, but ignored when
comparing).

-- 
Barry Margolin, barmar at bbnplanet.com
GTE Internetworking, Powered by BBN, Burlington, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.