问题：/var/log/maillog 日志中，有dovecot的警告信息，如

Nov 19 23:25:22 localhost dovecot: imap(laile@s)<1100>: Warning: autocreate plugin is deprecated, use mailbox { auto } setting instead

尝试：将dovecot配置文件中的原：

protocol imap {
  mail_plugins = "autocreate"
}

plugin {
  autocreate = Trash
  autocreate2 = Sent
  autosubscribe = Trash
  autosubscribe2 = Sent
}

替换为：

namespace inbox {
  inbox = yes

  mailbox Trash {
    auto = subscribe # autocreate and autosubscribe the Trash mailbox
    special_use = \Trash
  }
  mailbox Sent {
    auto = subscribe # autocreate and autosubscribe the Sent mailbox
    special_use = \Sent
  }
}

参考：https://serverfault.com/questions/763487/dovecot-autocreate-plugin-is-deprecated-use-mailbox-auto-setting

环境：CentOS7

问题：邮箱用户通过imap登录失败，/var/log/maillog 日志中有错误信息：localhost postfix/submission/smtpd[451]: error: unsupported dictionary type: mysql

尝试：yum install postfix-mysql 安装 postfix-mysql 后重启 postfix

参考：https://serverfault.com/questions/622796/postfix-error-unsupported-dictionary-type-mysql

环境：CentOS7

问题：邮箱用户通过imap登录失败，/var/log/maillog 日志中有错误信息：localhost dovecot: auth: Fatal: sql: Unknown database driver 'mysql'

尝试：yum install dovecot-mysql 安装 dovecot-mysql 后重启 dovecot

参考：https://serverfault.com/questions/334850/dovecot-auth-fatal-unknown-database-driver-pgsql

#! /bin/bash
mv /etc/nginx/sites-enabled/00-default.conf /etc/nginx/sites-available/00-default-temp.conf
mv /etc/nginx/sites-available/00-default-forlets.conf /etc/nginx/sites-enabled/00-default.conf
nginx -s reload
####
acme.sh --issue --nginx -d mail.abc.one -d mail.abc.two
mv /etc/nginx/sites-enabled/00-default.conf /etc/nginx/sites-available/00-default-forlets.conf
mv /etc/nginx/sites-available/00-default-temp.conf /etc/nginx/sites-enabled/00-default.conf
nginx -s reload
####
postfix reload
systemctl restart dovecot

再添加到任务计划中：59 02 1 * * bash /aqtest/renew-ssl.sh > /dev/null

参考：https://quericy.me/blog/860/

问题：启动VMware虚拟机时，提示错误：您的主机不满足在启用Hyper-V或device/Credential Guard的情况下运行VMware Workstation的最低要求。有关更多详细信息，请参阅 VMware 知识库文章 76918，网址为：https://kb.vmwae.com/kb/76918

尝试：

1. https://kb.vmwae.com/kb/76918 里提到，如果是用新版本的VMware Workstation（如15的版本），但Windows版本不够新（如19041.264之前的版本），会产生这种错误
2. 以管理员执行命令 bcdedit /set hypervisorlaunchtype off 关闭hyper-v，因为它可能与vmware的功能起冲突
3. 重启Windows，再启动vmware虚拟机

参考：

• https://kb.vmware.com/s/article/76918
• https://communities.vmware.com/message/2953728#2953728
• https://communities.vmware.com/thread/634863
• https://superuser.com/questions/1489224/windows-10-permanently-disable-vbs-virtualization-based-security