Address Recipient Delimiter downcasing after the +

Ken Murchison ken at
Thu May 12 16:20:05 EDT 2005

Spencer Tuttle wrote:

> Hello All,
> I am having the following problem, if I address email to
> username+test at and I have a folder called test and it has the
> acl of "anyone p" on it the mail gets delivered successfully to the
> folder.
> But if I address an email to username+Junk at and I have a
> folder called Junk and it has the acl of "anyone p" on it the mail goes
> to the INBOX. Looking in the logs I see that lmtp has downcased the
> entire email address so that when I send to username+Junk at it
> shows like this...
> May 11 21:26:49 rackman postfix/lmtp[17306]: 7517F62429:
> to=<username+junk at>,
> relay=/var/imap/socket/lmtp[/var/imap/socket/lmtp], delay=0, status=sent
> (250 2.1.5 Ok)
> I am running the following versions of software.
> Postfix-2.1.5
> Cyrus-2.2.12
> I have the following in my imapd.conf
> ...
> virtdomains:            userid
> defaultdomain:
> singleinstancestore:    yes
> lmtp_downcase_rcpt:     yes
> ...

What version of Cyrus.  If Cyrus true is doing this, its a bug, but I'd 
guess that Postfix is doing this.

Kenneth Murchison     Oceana Matrix Ltd.
Software Engineer     21 Princeton Place
716-662-8973 x26      Orchard Park, NY 14127
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