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<p>I understand that reading that paragraph makes it sounds obscure
and outdated. But the problem is that if something deletes &
recreates your folder, while you were gone, you would lose the
subscription. This includes other MUAs that are in no way
obligated to resubscribe to the folder if they do this.<br>
</p>
<p>Aki<br>
</p>
<br>
<div class="moz-cite-prefix">On 23.05.2018 23:13, Rupert Gallagher
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:RIgtx7UXE1hdThM9wXsabGQI0qA7o0zPvgA9tClcQtd2iQJzjDwal_vt6RNZet63iGkBttIV6G_cKYv_QChQagMFzURV0Rp_cjOkLhMGZ0U=@protonmail.com">
<div>Sorry for top posting, my client is still broken. </div>
<div> <br>
</div>
<div>I have never seen the ghost of a "<span
style="background-color: rgba(255, 255, 255, 0);">system-alerts"
or similar "well-known" mail folder in the past 30 years. </span>
</div>
<div><span style="background-color: rgba(255, 255, 255, 0);"><br>
</span>
</div>
<div><span style="background-color: rgba(255, 255, 255, 0);">Compliance
with an RFC obscure feature is compellong us all to </span><span
style="background-color: rgba(255, 255, 255, 0);">clear </span><span
style="background-color: rgba(255, 255, 255, 0);">subscriptions
fol</span> <span style="background-color: rgba(255, 255, 255,
0);">ders by hand. </span>
</div>
<div><span style="background-color: rgba(255, 255, 255, 0);"><br>
</span>
</div>
<div><span style="background-color: rgba(255, 255, 255, 0);">As we
meet the problem over and over again, a non-RFC configuration
option could solve the problem, and it would be very much
appreciated...</span>
</div>
<div> <br>
</div>
<div> <br>
</div>
<div>
<div>On Wed, May 23, 2018 at 11:57, Aki Tuomi <<a
href="mailto:aki.tuomi@dovecot.fi" class=""
moz-do-not-send="true">aki.tuomi@dovecot.fi</a>> wrote:</div>
<div> <br>
</div>
<div>> On 23.05.2018 12:31, Rupert Gallagher wrote: </div>
<blockquote class="protonmail_quote" type="cite">
<blockquote type="cite"
cite="mid:zQtYpyAyiDeYzri3miX1VsgsTmaWrXEG5FmsqSgAPZAH9zQXIWG7MeUnDprshLaPTwJAMyuqoGz4aFzGiQLq63mK7McIgpFWsTXlooGtArw=@protonmail.com">
<div><span style="background-color: rgba(255, 255, 255, 0);">Dovecot
does not clear the subscription file from non-existent
folders. </span> </div>
</blockquote>
<br>
Hi! <br>
<br>
Thank you for your bug report. Unfortunately this is not a
BUG, but mandated behavior by RFC3501, see last two paragraphs
in the excerpt. <br>
<br>
Aki Tuomi <br>
<br>
6.3.6. SUBSCRIBE Command <br>
<br>
Arguments: mailbox <br>
<br>
Responses: no specific responses for this command <br>
<br>
Result: OK - subscribe completed <br>
NO - subscribe failure: can't subscribe to that
name <br>
BAD - command unknown or arguments invalid <br>
<br>
The SUBSCRIBE command adds the specified mailbox name to
the <br>
server's set of "active" or "subscribed" mailboxes as
returned by <br>
the LSUB command. This command returns a tagged OK
response only <br>
if the subscription is successful. <br>
<br>
A server MAY validate the mailbox argument to SUBSCRIBE
to verify <br>
that it exists. However, it MUST NOT unilaterally
remove an <br>
existing mailbox name from the subscription list even if
a mailbox <br>
by that name no longer exists. <br>
<br>
Note: This requirement is because a server site can
<br>
choose to routinely remove a mailbox with a
well-known <br>
name (e.g., "system-alerts") after its contents
expire, <br>
with the intention of recreating it when new
contents <br>
are appropriate. <br>
</blockquote>
</div>
</blockquote>
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