我发出的邮件，全部收到：收件方服务器因未知原因拒绝连接。
Connection to the remote recipient's server was denied for unknown reason.
SMTP error, RCPT TO: 554 Unknown recipient,try proxy delivery next time2(domain CC)
或者
收件方服务器因未知原因拒绝连接。
Connection to the remote recipient's server was denied for unknown reason.
SMTP error, SMTP: 554 Unknown recipient
这样的提示，现在不能用这个邮件收集功能了么？
我发出的邮件，全部收到：收件方服务器因未知原因拒绝连接。 Connection to the remote recipient's server was denied for unknown reason. SMTP error, RCPT TO: 554 Unknown recipient,try proxy delivery next time2(domain CC) 或者 收件方服务器因未知原因拒绝连接。 Connection to the remote recipient's server was denied for unknown reason. SMTP error, SMTP: 554 Unknown recipient 这样的提示，现在不能用这个邮件收集功能了么？