jenkins構建郵件自動發送，測試郵件發送成功，構建項目郵件發送不成功的問題

提示問題： Connection error sending email,retrying once more in 10 seconds…… Connection error sending email,retrying once more in 10 seconds…… Failed after second try sending email   在系統管理，系統設置中，設置如下後，測試郵件

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