I am seeing this currently with a brand new att account setup fresh in 140 so this is not related to upgrade or caching. I can add the account using the security key and it adds the account fine but never fetches mail and seems to never even attempt to fetch mail.
Bug 1978361 Comment 12 Edit History
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I am seeing this currently with a brand new att account setup fresh in 140 so this is not related to upgrade or caching. I can add the account using the security key and it adds the account fine but never fetches mail and seems to never even attempt to fetch mail. It also fails to send mail. It acts like its successful and moves the message to sent but the message is never recieved by the other account.