Python 发邮件报错 server_hostname cannot be an empty string or start with a leading dot.

Python 发邮件报错 server_hostname cannot be an empty string or start with a leading dot.

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1、使用环境，报错内容

python 3.8

ValueError: server_hostname cannot be an empty string or start with a leading dot.

2、代码

server = smtplib.SMTP_SSL()
server.connect(mail_config.smtp_server, mail_config.smtp_port)

3、需要改为

server = smtplib.SMTP_SSL(mail_config.smtp_server)
server.connect(mail_config.smtp_server, mail_config.smtp_port)

4、因为

这里给了个空值

连接的时候又给了个默认值，所以需要两边都设置下