Hi! We have made a small fix to the Pigeonhole 0.5.11 tarball, please find the new tarball at https://pigeonhole.dovecot.org/releases/2.3/dovecot-2.3-pigeonhole-0.5.11.ta... https://pigeonhole.dovecot.org/releases/2.3/dovecot-2.3-pigeonhole-0.5.11.ta... The original released tarball is still available. The only change here is that the configure.ac file has correctly formatted version number. Regards, Aki Tuomi Open-Xchange oy