reject_unverified_recipient case sensitive?

11 msg	SMTP authentication with saslauthd against PAM
7 msg	Error in SMTP sequence
2 msg	dkim-milter on relay server unknown-jobid exter...
11 msg	Stubborn Cert issue
3 msg	Problems with false positives

reject_unverified_recipient case sensitive?
\ Nick Smith (12 Apr 2007)
. \ Jorey Bump (12 Apr 2007)
. . \ Jorey Bump (12 Apr 2007)
. . . \ Nick Smith (12 Apr 2007)

3 msg	dkim=fail (verification error: invalid key gran...
5 msg	? Using header checks on (Postini) X-pstn-levels
2 msg	Can't find error in my config file. Can you?
1 msg	chroot postgresql ssl problem
15 msg	What cert to buy
3 msg	Address re-writing
9 msg	Mail Rejected when we relay for a client.
8 msg	Queueing up archive messages
2 msg	Cannot send e-mails from any e-mail clients
1 msg	Re: outbound mail failure - need to fix asap -S...
4 msg	outbound mail failure - need to fix asap
3 msg	Postfix alias problem
2 msg	problem to send a mail to a command in aliases
3 msg	smtpd_auth

Subject:	reject_unverified_recipient case sensitive?
Group:	Postfix-users
From:	Nick Smith
Date:	12 Apr 2007

It appears as though the reject_unverified_recipient code requires an
exact case sensitive match for an active cached entry before it will
return the result from cache rather than initiate a fresh probe

Since <Invalid.Recipient> and
<INVALID.RECIPIENT> are equivalent, it seems that this
behaviour causes additional probes to be generated unnecessarily

Nick