"Retrieval using the IMAP4 protocol failed for the following message:__" messages while migrating
Trying to migrate mail from outlook to another server. While fetching messages from IMAP outlook server got messages with subject "Retrieval using the IMAP4 protocol failed for the following message:__". Is it some sort of error? What is the reason of it? Note : saw discussion of 2017 but the answer was not given there.