Hi @Jasmina de la Torre ,
Welcome to our forum!
What's your account?
And does this issue occur with all emails or some specific emails? If some specific emails, do they have anything in common?
Based on my research, i found a similar issue as yours in this article, please refer to it and check if it is your case: Can't send or receive email when using TLS 1.1 or TLS 1.0.
Hope to help you!
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