+1999-03-02 09:44:33 10HmaX-0005vi-00 SMTP error from remote mail server after RCPT TO:<userx@test.ex>: host ipv4.ipv4.ipv4.ipv4 [ipv4.ipv4.ipv4.ipv4]: 451 Recipient deferred
+1999-03-02 09:44:33 10HmaX-0005vi-00 SMTP error from remote mail server after initial connection: host thishost.test.ex [127.0.0.1]: 451 host deferred
+1999-03-02 09:44:33 10HmaX-0005vi-00 == userx@test.ex R=smarthost T=smtp defer (0): SMTP error from remote mail server after initial connection: host thishost.test.ex [127.0.0.1]: 451 host deferred