Cyrus IMAP hates me

Robert Watson rwatson at
Fri Oct 22 15:10:21 BST 2004

On Fri, 22 Oct 2004, Sam wrote:

> I realise this may be the wrong list for this question, but I also
> suspect that somebody reading this probably knows the answer... 
> We're having a bit of trouble with our mail setup: we have postfix
> (2.0.10) handing mail on to Cyrus imapd (2.1.13) via lmtp, and most of
> the time it Just Works. The problem is that mails with uppercase
> characters in the name (i.e. before the '@') get bounced thus: 

I just tried this on my postfix/cyrus server using very similar revisions
of both, and appear to have exactly the same problem.  The upside is, I
probably lose a lot of spam this way.  I found the thread on
lmtp_downcase_rcpt, but noticed that my imapd.conf(5) page doesn't mention
it, so maybe it was introduced in a later version of Cyrus? 

Robert N M Watson             FreeBSD Core Team, TrustedBSD Projects
robert at      Principal Research Scientist, McAfee Research

>         Oct 22 11:51:13 foo postfix/lmtp[98236]: 5C805E391C: 
>         to=<SAM at>,
>         relay=/var/imap/socket/lmtp[/var/imap/socket/lmtp], delay=0,
>         status=bounced (host
>         /var/imap/socket/lmtp[/var/imap/socket/lmtp] said: 550-Mailbox
>         unknown.  Either there is no mailbox associated with this
>         550-name or you do not have authorization to see it. 550 5.1.1
>         User unknown (in reply to RCPT TO command))
> Which is true (there is no mailbox called 'Sam', it's 'sam') but not
> very helpful. We Googled a bit and found a few people who recommended
> putting
>         'lmtp_downcase_rcpt: yes'
> in imapd.conf, so we did this, restarted imapd, and... nothing happened.
> Anybody else run up against this apparently braindead behaviour? Or have
> we missed something?
> Thanks
> Sam
> -- 
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