[SMTP] yandex.ru (Thu, 09 Sep 2021 16:07:01 +0000)

mx.yandex.ru - 2a02:6b8::311 : 25

Error during analysis: Connection refused - connect(2) for [2a02:6b8::311]:25

mx.yandex.ru - 77.88.21.249 : 25

Error during analysis: Too long analysis (max 2 minutes)