On Thu, 2015-08-06 at 16:10 +0200, Stephan Bosch wrote: > What version of the extdata plugin are you using? This looks like a > version built for Dovecot v2.1/Pigeonhole 0.3.0. Keep in mind that the > extdata plugin is not part of the Pigeonhole distribution, so that will > not be upgraded along with Pigeonhole. > > Since the extdata plugin is not part of the normal Debian packages (not > afaik anyway), you likely compiled and installed the extdata plugin > manually in the past while using Dovecot 2.1. Do that again, but use > this repository: http://hg.rename-it.nl/pigeonhole-0.4-sieve-extdata/
You're absolutely right; sorry, I had completely forgotten. I'll give that a go and let you know how I get on. Thanks, Andy