query error: Table 'dspam.dspam_virtual_uids'

errai

DSPAM 在邮件日志里的错误信息：

Jun 23 13:33:34 mail dspam[1396]: query error: Table 'dspam.dspam_virtual_uids' doesn't exist: see sql.errors for more details
Jun 23 13:33:34 mail dspam[1396]: query error: Table 'dspam.dspam_preferences' doesn't exist: see sql.errors for more details
Jun 23 13:33:34 mail dspam[1396]: query error: Table 'dspam.dspam_preferences' doesn't exist: see sql.errors for more details
Jun 23 13:33:34 mail dspam[1396]: query error: Table 'dspam.dspam_virtual_uids' doesn't exist: see sql.errors for more details
Jun 23 13:33:34 mail dspam[1396]: query error: Table 'dspam.dspam_virtual_uids' doesn't exist: see sql.errors for more details
Jun 23 13:33:34 mail dspam[1396]: bailing on error -2
Jun 23 13:33:34 mail dspam[1396]: received invalid result (! DSR_ISSPAM || DSR_INNOCENT) : -2
Jun 23 13:33:34 mail dspam[1396]: query error: Table 'dspam.dspam_virtual_uids' doesn't exist: see sql.errors for more details
Jun 23 13:33:34 mail dspam[1396]: process_message returned error -2.  delivering.

偶尔有几封邮件出现以上错误信息，现在服务器收发正常，不知道这几个错误信息有什么影响，烦请碰到过的兄弟指点迷津，谢谢