输入字符串 [英] Enter in String

问题描述

早上好，

我正在编写一个程序以发送一些电子邮件.我正在与smtp.sapo.pt
聊天 但是有问题.
当与服务器的链接我收到此消息

Good Morning,

I''m making a program to send a few e-mails. I''m talking to smtp.sapo.pt
but a have a problem.
When a link with the server i receive this message

报价:

"220 SAPO.pt PTMailServer mta15 ESMTP SPF1"

"220 SAPO.pt PTMailServer mta15 ESMTP SPF1"

通过使用c套接字和telnet.

然后我在C中回复此命令

by using c sockets and telnet.

Then i reply in c this command

tester=send(sock,"MAIL FROM: [e-mail]",34,0);
tester=recv(sock,buffer,buf,0);

如果我在telnet中执行此操作，则响应为"250 ok"，但是如果我发送它，则抛出套接字，它将再次返回

If i do this in telnet in responds "250 ok" but if i send it throw sockets it returns once again

Quote:

"220 SAPO.pt PTMailServer mta15 ESMTP SPF1"

"220 SAPO.pt PTMailServer mta15 ESMTP SPF1"

我认为服务器未处理我的命令.我认为我需要在字符串中包含回车符.

需要帮助，ty

I think that the server isn''t processing my command. i think that i need to include a enter in my string.

Need help, ty

推荐答案

您需要先发送"HELO"命令来启动邮件交换，如

You need to send a "HELO" command first to initiate a mail exchange, as described in RFC 2821[^].

尝试在字符串中使用"\ n"和/或"\ r"-是否要使用CR或LF或CR取决于远程设备+ LF(CR可能会使用"\ r"，但请先尝试"\ n").

Try "\n" and/or "\r" in your string - it depends on the remote equipment whether it wants CR or LF or CR+LF (probably "\r" for CR will do, but try "\n" first).

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