user+folder@domain delivery

[Adi Linden]

Is there any configuration parameter to enable user+folder at domain delivery
directly into a subfolder in cyrus-imap?  I am using postfix and I am
delivering direct via a lmtp socket. From the log it looks like postfix
lmtp delivers the '+spam' part but imapd doesn't seem to care about it.

    Oct 26 01:55:16 yoda imapd/lmtppostfix[13073]: duplicate_mark:
     <Pine.CYG.4.58.0410260155000.1968 at citabria> planecrazy.ca!user.fred
     1098773716 17
    Oct 26 01:55:16 yoda postfix/lmtp[13098]: 1300A1BDB7:
     to=<fred+spam at planecrazy.ca>,
     relay=/var/spool/postfix/socket/lmtp[/var/spool/postfix/socket/lmtp],
     delay=0, status=sent (250 2.1.5 Ok)

Thanks,
Adi
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