<html><head></head><body><div style="font-family: Verdana;font-size: 12.0px;"><div>zlib plugin, as far as I know, only supports zstd, gzip, bzip2 and lzma/xz compression. The last one is being deprecated.</div>
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<div>I have found this interesting post in the mailing list:</div>
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<div>https://dovecot.org/pipermail/dovecot/2021-February/121329.html</div>
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<pre>Same problem here with Dovecot 2.3.13, "doveadm altmove -r" is not
moving anything from alternate to default storage. I fixed this by
reverting this commit:
<a href="https://github.com/dovecot/core/commit/2795f6183049a8a4cc489869b3e866dc20a8a732">https://github.com/dovecot/core/commit/2795f6183049a8a4cc489869b3e866dc20a8a732</a></pre>
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<div>Is this fixed in 2.3.14 ? Does doveadm altmove -r works as expected in 2.3.14?</div>
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<div>Regards</div>
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<div name="quote" style="margin:10px 5px 5px 10px; padding: 10px 0 10px 10px; border-left:2px solid #C3D9E5; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">
<div style="margin:0 0 10px 0;"><b>Sent:</b> Sunday, March 21, 2021 at 11:28 PM<br/>
<b>From:</b> "justina colmena ~biz" <justina@colmena.biz><br/>
<b>To:</b> dovecot@dovecot.org<br/>
<b>Subject:</b> Re: Question about doveadm altmove</div>
<div name="quoted-content">On Sunday, March 21, 2021 12:16:28 PM AKDT María Arrea wrote:<br/>
> Hello.<br/>
><br/>
> We are running dovecot 2.3.13. Full doveconf -n output below<br/>
><br/>
> In 2.3.14 Changelog I found this:<br/>
><br/>
> * Remove XZ/LZMA write support. Read support will be removed in future<br/>
> release.<br/>
> We are using mdbox + XZ/LZMA for alternate storage (messages older than 2<br/>
> weeks are moved to ALT storage via cron job), so we must convert from XZ to<br/>
> another thing (maybe zstd or bz2).<br/>
<br/>
Why can't you just pipe the output of "doveadm altmove" command through an<br/>
external command to do the XZ/LZMA compression if dovecot no longer supports<br/>
it internally?<br/>
<br/>
From doveadm-altmove (1):<br/>
> This command can be used with sdbox or mdbox storage to move mails to<br/>
alternative<br/>
> storage path when :ALT=<path> is specified for the mail location.<br/>
<br/>
And that's set in stone.<br/>
<br/>
<a href="https://en.wikipedia.org/wiki/XZ_Utils" target="_blank">https://en.wikipedia.org/wiki/XZ_Utils</a><br/>
<br/>
So what are the issues with xz? Security? Crashes or viruses on expanding<br/>
invalid archives?</div>
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