[Dovecot] Error: FETCH [1] for mailbox badbox UID 1 got too little data: 2 vs 4

[Chris Wilson]

Hi all,

I can send myself a test message that causes Dovecot to crash when I open 
it in Alpine, with the following error:

Jan 12 14:52:52 one-mail dovecot: imap(chris): Error: FETCH [1] for 
  mailbox badbox UID 1 got too little data: 2 vs 4
Jan 12 14:52:52 one-mail dovecot: imap(chris): Error: Corrupted index 
  cache file /home/chris/mail/.imap/badbox/dovecot.index.cache: Broken 
  MIME parts for mail UID 1
Jan 12 14:52:52 one-mail dovecot: imap(chris): Disconnected: FETCH failed 
  bytes=485/1394

I can do this as follows:

$ touch ~/mail/badbox
$ echo test | /usr/libexec/dovecot/dovecot-lda -m badbox
$ cat ~/mail/badbox
>From MAILER-DAEMON  Wed Jan 12 14:52:29 2011
test
X-IMAPbase: 1294843949 0000000001
X-UID: 1
Status: 
X-Keywords:                                                                         
Content-Length: 1

And then when I try to open badbox in Alpine (over IMAP), and then open 
this email, I get the error above, and the connection is aborted.

I expect that the "test" line is not a valid header, but dovecot should 
not crash when opening it.

Cheers, Chris.
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