Bugzilla提交保存bug的时候报错Software error

[erif1001]

Bugzilla提交保存bug的时候，提交保存后数据是保存成功了，但是却显示错误页面，什么情况呢？
页面错误如下：

Software error:

Can't locate object method "message" via package "Wide character in syswrite at lib/Net/Cmd.pm line 212.
" (perhaps you forgot to load "Wide character in syswrite at lib/Net/Cmd.pm line 212.
"?) at Bugzilla/Mailer.pm line 181.

For help, please send mail to the webmaster (root@localhost), giving this error message and the time and date of the error.[/b]

[erif1001]

这个错误是因为提bug后发送邮件失败导致的，不知如何解决，升级5.0.3后邮件发送正常就没有这个错误了。