Unable to write *.sieve files while Dovecot is running

Sami Ketola sami at ketola.io
Fri Apr 8 13:58:19 UTC 2022

> On 7. Apr 2022, at 16.16, Ralph Seichter <ralph at ml.seichter.de> wrote:
> I noticed lately that I can no longer modify *.sieve files while Dovecot
> is running. Write operations appear not to be permitted anymore:
> $ echo >> example.sieve
> zsh: permission denied: example.sieve
> Text editors like vim cannot write either. Since I used to be able to
> modify Sieve source files on the fly, I am wondering if the behaviour
> I see nowadays is intentional?

Dovecot does not keep the files open or protect them against modifications.
It is most likely some security feature in your operating system that blocks the


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