<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">On 22 Jul 2019, at 10.34, Lothar Schilling via dovecot <<a href="mailto:dovecot@dovecot.org" class="">dovecot@dovecot.org</a>> wrote:<br class=""><div><blockquote type="cite" class=""><br class="Apple-interchange-newline"><div class=""><div class="">Hi Arnold,<br class=""><br class="">thanks for your assistance. I solved the issue right now by changing<br class=""><br class="">prefix = Shared/%%u/<br class="">to<br class="">prefix = Shared/%%n/<br class=""><br class="">This omits the @mydomain.de part which holds the dot causing the<br class="">trouble. Why this became a problem due to the update I wouldn't know.<br class=""></div></div></blockquote><div><br class=""></div><div>Accidental bug. Fixed by <a href="https://github.com/dovecot/core/commit/62f3b738efd4a6444a4bde4a80bea208c5b39ccd" class="">https://github.com/dovecot/core/commit/62f3b738efd4a6444a4bde4a80bea208c5b39ccd</a></div><br class=""><blockquote type="cite" class=""><div class=""><div class=""><br class="">Regards<br class=""><br class="">Lothar<br class=""><br class="">Am 22.07.2019 um 10:49 schrieb Arnold Opio Oree:<br class=""><blockquote type="cite" class="">Hi Lothar,<br class=""><br class="">I haven't yet had the opportunity to go deep into Dovecot engineering /<br class="">development, (so please correct me if necessary anyone).<br class=""><br class="">I have experienced this exception where attempting to copy mailbox data<br class="">within a client from IMAP account to IMAP account, but I have not had<br class="">it cause a mailbox to become inaccessible.<br class=""><br class="">The reason was because Maildir++ format uses the "." separator to<br class="">delineate child directories, and therefore the character is illegal in<br class="">mailbox names. The issue was addressed by either changing the<br class="">filesystem layout to LAYOUT=fs or by changing the mailbox format<br class="">altogether to e.g. sdbox.<br class=""><br class=""><blockquote type="cite" class=""> location = maildir:%%h:INDEX=%h/shared/%%u<br class=""></blockquote>I can see from your configuration that the LAYOUT is not set as fs, so<br class="">I would assume is still using Maildir++.<br class=""><br class="">Perhaps this setting was lost during the upgrade?<br class=""><br class="">Regards,<br class=""><br class="">Arnold Opio Oree<br class="">Chief Executive Officer<br class="">Parallax Digital Technologies<br class=""><br class=""><a href="mailto:arnoldoree@parallaxdt.com" class="">arnoldoree@parallaxdt.com</a><br class=""><br class="">http://www.parallaxdt.com<br class=""><br class="">tel : +44 (0) 333 577 8587<br class="">fax : +44 (0) 20 8711 2477<br class=""><br class="">Parallax Digital Technologies is a trading name of Parallax Global<br class="">Limited. U.K. Co. No. 08836288<br class=""><br class="">The contents of this e-mail are confidential. If you are not the<br class="">intended recipient you are to delete this e-mail immediately, disregard<br class="">its contents and disclose them to no other persons.<br class=""><br class="">-----Original Message-----<br class="">From: Lothar Schilling via dovecot <dovecot@dovecot.org><br class="">Reply-To: Lothar Schilling <ls@proasyl.de><br class="">To: dovecot@dovecot.org<br class="">Subject: Character not allowed in mailbox name<br class="">Date: Mon, 22 Jul 2019 08:33:45 +0200<br class=""><br class="">Hi everybody,<br class=""><br class="">after an update this morning to dovecot 2.3.7 we cannot connect to our<br class="">shared mailboxes anymore. The error message as issued in Thunderbird:<br class=""><br class="">"Character not allowed in mailbox name '.'"<br class=""><br class="">I didn't change anything about the configuration. Output of dovecot -n:<br class=""><br class="">[...]<br class="">namespace {<br class=""> list = children<br class=""> location = maildir:%%h:INDEX=%h/shared/%%u<br class=""> prefix = Shared/%%u/<br class=""> separator = /<br class=""> subscriptions = yes<br class=""> type = shared<br class="">}<br class="">[...]<br class=""><br class="">Any help would be appreciated, thank you very much.<br class=""><br class="">Lothar Schilling<br class=""><br class=""><br class=""><br class=""><br class=""><br class=""></blockquote><br class=""></div></div></blockquote></div><br class=""></body></html>