邮件服务这两天一直出现内网邮件用户收发正常,外网用只能发,却不能收;

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2007-07-06 03:50:53   IMAP Server: Listener failure: The TCP/IP stack can't bind
a network address to a TCP socket, please verify that the TCP stack has been pr
operly initialized.
2007-07-06 03:50:53   Suspending listen task for 20 seconds due to network error
s
2007-07-06 03:51:13   IMAP Server: Listener failure: The TCP/IP stack can't bind
a network address to a TCP socket, please verify that the TCP stack has been pr
operly initialized.
2007-07-06 03:51:13   Suspending listen task for 20 seconds due to network error
s
>


邮件服务这两天一直出现内网邮件用户收发正常,外网用只能发,却不能收;
请朋友检查了,相关的配置感觉没有问题,但问题一直得不到解决,怀疑是受攻击,封了许多的外网段,还是解决不了问题.从DOMINO里截了一些错误，请大家各位高手帮忙，指点．

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怎么有人看,没有人回呢