单选题A user can receive email but cannot send email with the email client software. Which of the following protocols is incorrectly configured?（）AFTPBSMTPCPOPDSNMP
单选题
A user can receive email but cannot send email with the email client software. Which of the following protocols is incorrectly configured?（）
A
FTP
B
SMTP
C
POP
D
SNMP
参考解析
解析：
暂无解析
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