message 中一直在报mail out of memory

阳神

时常出现邮件无法发送的问题
邮件服务器message中
May 11 10:07:06 mail out of memory [29261]
May 11 10:07:06 mail out of memory [29261]
May 11 10:07:07 mail out of memory [29295]
May 11 10:07:07 mail out of memory [29295]
May 11 10:07:34 mail out of memory [29481]
May 11 10:07:34 mail out of memory [29481]
May 11 10:08:06 mail out of memory [29726]
May 11 10:08:06 mail out of memory [29726]
May 11 10:08:30 mail out of memory [29941]
May 11 10:08:30 mail out of memory [29941]
May 11 10:08:49 mail out of memory [30131]
May 11 10:08:49 mail out of memory [30131]
May 11 10:09:22 mail out of memory [30372]
May 11 10:09:22 mail out of memory [30372]
May 11 10:10:33 mail out of memory [30961]
May 11 10:10:33 mail out of memory [30961]
May 11 10:10:39 mail out of memory [31008]
May 11 10:10:39 mail out of memory [31008]
May 11 10:10:40 mail out of memory [31009]
May 11 10:10:40 mail out of memory [31009]
May 11 10:10:45 mail out of memory [31063]
May 11 10:10:45 mail out of memory [31063]
May 11 10:10:56 mail out of memory [31178]

但进程占用内存不大
试着调/proc/sys/kernel/shmmax 到2048000000 问题还是存在