Mailbox inaccessible after setaclmailbox with invalid identifier

[Sven Schwedas]

After running `setaclmailbox some/mailbox "group:name with spaces" all`,
all attempts to access the mailbox in any way either result in an
"Invalid identifier" error message, or can't even find the mailbox.

deleteaclmailbox with exactly the same parameters as set doesn't help
(same "invalid identifier" error); cyrreconstruct doesn't even find the
mailbox. Deliveries are deferred as well.

Any ideas how I can recover the mailbox without rolling back the whole
server to an older backup?

(Cyrus 2.5.10 on Debian stretch, if that matters.)

-- 
Mit freundlichen Grüßen, / Best Regards,
Sven Schwedas, Systemadministrator
✉ sven.schwedas at tao.at | ☎ +43 680 301 7167
TAO Digital   | Teil der TAO Beratungs- & Management GmbH
Lendplatz 45  | FN 213999f/Klagenfurt, FB-Gericht Villach
A8020 Graz    | https://www.tao-digital.at

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