邮件服务器内存缓冲区错误

我的邮件服务器不时发送任何新的邮件。 发生这种情况时，我find下面的错误日志，

Jun 22 23:10:18 myserver saslauthd[3967]: DEBUG: auth_pam: pam_authenticate failed: Memory buffer error Jun 22 23:10:18 myserver saslauthd[3971]: DEBUG: auth_pam: pam_authenticate failed: Memory buffer error Jun 22 23:10:19 myserver saslauthd[3972]: DEBUG: auth_pam: pam_authenticate failed: Memory buffer error Jun 22 23:10:19 myserver saslauthd[3968]: DEBUG: auth_pam: pam_authenticate failed: Memory buffer error Jun 22 23:10:20 myserver saslauthd[3969]: DEBUG: auth_pam: pam_authenticate failed: Memory buffer error Jun 22 23:10:20 myserver saslauthd[3967]: DEBUG: auth_pam: pam_authenticate failed: Memory buffer error Jun 22 23:10:21 myserver saslauthd[3971]: DEBUG: auth_pam: pam_authenticate failed: Memory buffer error Jun 22 23:10:21 myserver saslauthd[3972]: DEBUG: auth_pam: pam_authenticate failed: Memory buffer error Jun 22 23:10:22 myserver saslauthd[3971]: DEBUG: auth_pam: pam_authenticate failed: Memory buffer error 

每次我必须重新启动服务器才能正常工作。

我也总是从未知的IP地址find下面重复的错误日志（我不确定它是否相关）：

 Jun 21 06:48:43 myserver sshd[1687]: PAM 2 more authentication failures; logname= uid=0 euid=0 tty=ssh ruser= rhost=************ user=root Jun 21 06:48:45 myserver sshd[1708]: Failed password for root from ######## port 60021 ssh2 Jun 21 06:48:47 myserver sshd[1708]: Failed password for root from ######## port 60021 ssh2 Jun 21 06:48:47 myserver sshd[1708]: Received disconnect from #######: 11: [preauth] Jun 21 06:48:47 myserver sshd[1708]: PAM 2 more authentication failures; logname= uid=0 euid=0 tty=ssh ruser= rhost=************ user=root Jun 21 06:48:47 myserver sshd[1730]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=************ user=root Jun 21 06:48:48 myserver sshd[1732]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost============= user=root Jun 21 06:48:48 myserver sshd[1730]: Failed password for root from ************ port 60094 ssh2 Jun 21 06:48:50 myserver sshd[1732]: Failed password for root from ============ port 40613 ssh2 Jun 21 06:48:50 myserver sshd[1730]: Failed password for root from ************ port 60094 ssh2 Jun 21 06:48:50 myserver sshd[1734]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=************ user=root Jun 21 06:48:52 myserver sshd[1736]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=************ user=root Jun 21 06:48:52 myserver sshd[1732]: Failed password for root from ============ port 40613 ssh2 Jun 21 06:48:52 myserver sshd[1730]: Failed password for root from ************ port 60094 ssh2 Jun 21 06:48:52 myserver sshd[1730]: Received disconnect from ***********: 11: [preauth] Jun 21 06:48:52 myserver sshd[1730]: PAM 2 more authentication failures; logname= uid=0 euid=0 tty=ssh ruser= rhost=*********** user=root Jun 21 06:48:52 myserver sshd[1734]: Failed password for root from ######## port 47803 ssh2 Jun 21 06:48:54 myserver sshd[1736]: Failed password for root from ######## port 55371 ssh2 Jun 21 06:48:54 myserver sshd[1732]: Failed password for root from ============ port 40613 ssh2 

• 后缀 – 限制传出并发连接到一台机器/ IP
• Postfix收到的邮件放在/var/mail/user/.Sent Messages中
• 后缀：错误：打开数据库/etc/postfix/generic.db：没有这样的文件或目录
• Postfix – 退回邮件不会发送给postmaster
• 在osTicket中使用电子邮件创build票证

 service saslauthd restart