请教"Error opening or locking INBOX " 问题~

请问一下各位大哥,

有一位用户出现收邮件自动中断问题,

client是用 outlook

服务器是sendmail.

出现日志如下:


May 15 11:09:34 sendmail ipop3d[26388]: Mailbox is open by another process, access is readonly
May 15 11:09:34 sendmail ipop3d[26388]: Error opening or locking INBOX user=liu_jianhua host=[60.213.64.60]
May 15 11:09:34 sendmail ipop3d[26388]: Login user=liu_jianhua host=[60.213.64.60] no mailbox
May 15 11:09:34 sendmail ipop3d[26388]: Expunge ignored on readonly mailbox
May 15 11:09:34 sendmail ipop3d[26388]: Logout user=liu_jianhua host=[60.213.64.60] nmsgs=1 ndele=0


先谢谢大家拉