曾用过james2.3，用javamail测试通过，能发能收，最近使用james3.0时出现了很多问题
INFO 11:28:34,964 | james.smtpserver | Successfully spooled mail Mail
13662557149
64-7 from [email protected] on 127.0.0.1 for [[email protected]]
INFO 11:29:11,265 | james.smtpserver | Successfully spooled mail Mail
13662557512
65-9 from [email protected] on 127.0.0.1 for [[email protected]]
这是james控制台提示的已经发送成功，但是等一下又有这样的提示
ERROR 11:38:59,264 | james.dnsservice | Couldn't resolve IP address for host ljg.com.
INFO 11:38:59,264 | james.mailetcontext | Temporary problem looking up mail server for host: ljg.com
INFO 11:38:59,264 | james.mailetcontext | Temporary exception delivering mail (Mail
13662551305
43-5-to-ljg.com:
INFO 11:38:59,264 | james.mailetcontext | Storing message Mail
13662551305
43-5-to-ljg.com into outgoing after 4 retries
ERROR 11:38:59,326 | james.dnsservice | Couldn't resolve IP address for host ljg.com.
INFO 11:38:59,327 | james.mailetcontext | Temporary problem looking up mail server for host: ljg.com
INFO 11:38:59,327 | james.mailetcontext | Temporary exception delivering mail (Mail
13662548246
72-1-to-ljg.com:
INFO 11:38:59,329 | james.mailetcontext | Storing message Mail
13662548246
72-1-to-ljg.com into outgoing after 5 retries
这个问题出在什么地方啊？求大神解答，非常感谢啊

解决了吗