The v3 uses a dedicated mailbox 'errors@picalike.corpex-kunden.de' that is used to collect cron output and some scripts also use the mailbox to send mails directly.
We asked corpex, they did a reset for the password. We skimmed through the mails and a lot of 'useless' stuff is sent to the mailbox. The goal is to delete all stuff and decide what output could be avoided.
Keywords: imap mailbox errors v3