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<p>That's rather difficult semantic question.<br>
</p>
<p>Aki<br>
</p>
<br>
<div class="moz-cite-prefix">On 24.05.2018 08:35, Roger Klorese
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAKgpObaoeU383afA6TgDu-g13++-dL_hSDeuGdp=VDOJG9F6DA@mail.gmail.com">If
something deletes and recreates the folder, it’s not really the
folder to which you subscribed, is it?!<br>
<div class="gmail_quote">
<div dir="ltr">On Wed, May 23, 2018 at 10:33 PM Aki Tuomi <<a
href="mailto:aki.tuomi@dovecot.fi" moz-do-not-send="true">aki.tuomi@dovecot.fi</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<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obscure and outdated.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="m_-7914998998868161952moz-cite-prefix">On
23.05.2018 23:13, Rupert Gallagher wrote:<br>
</div>
<blockquote type="cite">
<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" target="_blank"
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="m_-7914998998868161952protonmail_quote"
type="cite">
<blockquote type="cite">
<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>
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</blockquote>
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