zlib errors after upgrading
timo at sirainen.com
Fri Aug 28 14:15:59 EEST 2020
On 28. Aug 2020, at 12.10, Robert Nowotny <rnowotny at rotek.at> wrote:
> unfortunately after re-installing 184.108.40.206, those broken-pipe errors appear again. (on different, new files)
> so for sure there is something broken with zlib.
> I will go back to 220.127.116.11 now.
> attached is the configuration file, though it did not change between 18.104.22.168 and 22.214.171.124
Oh, this is with xz, not with gz like we first thought. There are some known problems with xz, which is why we are planning on removing it entirely. I'm not sure why v2.3.11 breaks it, although there are some changes related to it but it might be coincidence. I can't reproduce this problem though.
In any case, I'd recommend switching to zlib or to zstd in v2.3.12. (In theory you could leave the existing mails xz-compressed, but best would be to re-compress everything via dsync so old mails can be read when we eventually remove xz support.)
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