I have two identical filter > parser > action "streams", they monitor two different mailboxes on one server. One of them gives the error in the picture attached on every run, the other runs without error. Can you help? I have tried deleting the oldest email in the mailbox monitored by the stream where the error occurs.
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I have exchanged some emails with Colin and realized that it was an email with wrongly formatted header that was causing the problem. We were able to fix this issue with a fix for the version 4.8.
