Character not allowed in mailbox name

Lothar Schilling ls at
Mon Jul 22 09:33:45 EEST 2019

Hi everybody,

after an update this morning to dovecot 2.3.7 we cannot connect to our
shared mailboxes anymore. The error message as issued in Thunderbird:

"Character not allowed in mailbox name '.'"

I didn't change anything about the configuration. Output of dovecot -n:

namespace {
  list = children
  location = maildir:%%h:INDEX=%h/shared/%%u
  prefix = Shared/%%u/
  separator = /
  subscriptions = yes
  type = shared

Any help would be appreciated, thank you very much.

Lothar Schilling

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