Rob Tanner wrote: > Yep. It's in the manpage and i plain just missed it. That works for > me because all out names are lower-case. But I though that both the > recipient and hostname werte supposed to be case insensitive (i.e., > [EMAIL PROTECTED] and [EMAIL PROTECTED] are the same address). > Am I wrong about that?
Yes, I think you are. I believe the appropriate bit from RFC 2821 is this:- ====================================================================== Verbs and argument values (e.g., "TO:" or "to:" in the RCPT command and extension name keywords) are not case sensitive, with the sole exception in this specification of a mailbox local-part (SMTP Extensions may explicitly specify case-sensitive elements). That is, a command verb, an argument value other than a mailbox local-part, and free form text MAY be encoded in upper case, lower case, or any mixture of upper and lower case with no impact on its meaning. This is NOT true of a mailbox local-part. 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". However, exploiting the case sensitivity of mailbox local-parts impedes interoperability and is discouraged. ====================================================================== So systems are permitted to use case sensitive usernames, and as such, case must be preserved in SMTP and LMTP transactions. In practice of course this is rarely the case - usernames are almost always case insensitive, so it rarely causes trouble. HTH, Mike. --- Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
