Просмотр кода страницы Exim - host lookup did not complete


=== Exim - host lookup did not complete ===

Ошибка вида:
 2016-03-22 13:33:17 H=localhost (195.154.231.28) [::1] sender verify defer for <support@test.com>: host lookup did not complete
 2016-03-22 13:33:17 H=localhost (195.154.231.28) [::1] F=<support@test.com> A=auth_plain:support@test.com temporarily  rejected RCPT <mailto@gmail.com>: Could not complete sender verify


Решение - прописать корректные ДНС сервера в резолвер:
 # cat /etc/resolv.conf
 nameserver 8.8.8.8
 nameserver 8.8.4.4


Перезапускаем exim (CentOS 7)
 # systemctl restart exim