zmprov modifyServer {{ you domain }} zimbraMtaTlsAuthOnly FALSE zmcontrol restart
查看对应配置
zmprov getServer {{ you domain }} | grep Auth查看SMTP是否开启成功
[zimbra@xxxxx log]$ telnet localhost 25 Trying 127.0.0.1... Connected to localhost. Escape character is \'^]\'. 220 xxxx ESMTP Postfix ehlo xxxx 250-xxxxx 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-STARTTLS 250-AUTH LOGIN PLAIN #SMTP认证相关参数 250-AUTH=LOGIN PLAIN #SMTP认证相关参数 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN