[Dovecot] Command died with signal 11: " /usr/libexec/dovecot/dovecot-lda"

[Timo Sirainen]

On Tue, 2010-10-12 at 18:42 +0000, Xiiph wrote:

> This has happened to me too. After a bit of investigation I believe I found what
> causes it, and I have successfully managed to reproduce it.
> 
> This seems to happen when dovecot-lda attempts to deliver a mail to multiple
> aliases resolving to the same user. For example:
> 
> # /etc/aliases
> xiiph:  xiiph at example.com
> admin:  xiiph at example.com
> 
> Sending a mail to both xiiph and admin (for example as to and cc) will result in
> one mail being delivered, and one mail bounced with signal 11 from dovecot-lda.

I think that simply causes two dovecot-ldas to be executed at the same
time. And that probably causes a race condition that causes the crash.
Did you already try patched with
http://hg.dovecot.org/dovecot-2.0/raw-rev/e2f9baa436f2 ?