About 10 times within the past day I've received the above message, all for @aol.ca domains, but different mailboxes. It does sound like a spambot or something to me (due to the high amount of new users from @aol.ca in the timeframe). But is "general failure" a hard bounce so I can safely remove those mail addresses as users from my site or is it more like " soft bounce" so the message might be delivered at a later time?
I did not find the right solution from the internet.
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