我尝试使用postfix和dovecot在Centos 7上设置电子邮件服务器。
每当我远程登录我的服务器时，我都会被赶出去：
[root@mail log]# telnet mail.mydomain.com smtp
Trying IP ADDRESS...
Connected to mail.mydomain.com.
Escape character is '^]'.
Connection closed by foreign host.
当我检查/ var / log / maillog中的日志时，这是我看到的错误：
Mar 15 05:33:44 vultr postfix/smtps/smtpd[20434]: connect from ***********
Mar 15 05:33:44 vultr postfix/smtps/smtpd[20434]: warning: SASL authentication failure: Internal Error -4 in server.c near line 1757
Mar 15 05:33:44 vultr postfix/smtps/smtpd[20434]: warning: SASL authentication failure: Internal Error -4 in server.c near line 1757
Mar 15 05:33:44 vultr postfix/smtps/smtpd[20434]: warning: SASL authentication failure: Internal Error -4 in server.c near line 1757
Mar 15 05:33:44 vultr postfix/smtps/smtpd[20434]: warning: xsasl_cyrus_server_get_mechanism_list: no mechanism available
Mar 15 05:33:44 vultr postfix/smtps/smtpd[20434]: fatal: no SASL authentication mechanisms
Mar 15 05:33:45 vultr postfix/master[18735]: warning: process /usr/libexec/postfix/smtpd pid 20434 exit status 1
Mar 15 05:33:45 vultr postfix/master[18735]: warning: /usr/libexec/postfix/smtpd: bad command startup -- throttling
任何帮助将不胜感激，谢谢。