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我的C++代碼是這樣的無法使用的libcurl
CURL *curl;
CURLcode curlres;
struct curl_slist *recipients = NULL;
char from[128] = "<[email protected]>";
char to[128] = "[email protected]";
curl = curl_easy_init();
curl_easy_setopt(curl, CURLOPT_URL, COOLCAST_MAILER_URL);
curl_easy_setopt(curl, CURLOPT_MAIL_FROM, from);
recipients = curl_slist_append(recipients, to);
curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, recipients);
curl_easy_setopt(curl, CURLOPT_READFUNCTION, payload_source);
curl_easy_setopt(curl, CURLOPT_READDATA, NULL);
curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
curlres = curl_easy_perform(curl);
if(curlres != CURLE_OK)
qDebug() << "Encountered error in sending email";
屏幕上的輸出，以發送電子郵件看起來是這樣的：
[[email protected] mailman]$ /path/to/executable
* Rebuilt URL to: smtp://localhost/
* Hostname was NOT found in DNS cache
* Trying 127.0.0.1...
* Connected to localhost (127.0.0.1) port 25 (#0)
< 220 ip-10-0-0-51 ESMTP Sendmail 8.14.4/8.14.4; Sat, 3 May 2014 19:35:57 GMT
> EHLO ip-10-0-0-51
< 250-ip-10-0-0-51 Hello localhost [127.0.0.1], pleased to meet you
< 250-ENHANCEDSTATUSCODES
< 250-PIPELINING
< 250-8BITMIME
< 250-SIZE
< 250-DSN
< 250-ETRN
< 250-DELIVERBY
< 250 HELP
> VRFY [email protected]
< 252 2.5.2 Cannot VRFY user; try RCPT to attempt delivery (or try finger)
252 2.5.2 Cannot VRFY user; try RCPT to attempt delivery (or try finger)
* Connection #0 to host localhost left intact
現在，我的SMTP服務器工作正常。下面是我手動執行以下SMTP命令EHLO，MAIL FROM，RCPT TO，DATA telnet會話，QUIT和電子郵件得到了成功交付
[[email protected] mailman]$ telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
220 ip-10-0-0-51 ESMTP Sendmail 8.14.4/8.14.4; Sat, 3 May 2014 19:36:41 GMT
MAIL FROM: [email protected]
250 2.1.0 [email protected] Sender ok
RCPT TO: [email protected]
250 2.1.5 [email protected] Recipient ok
DATA
354 Enter mail, end with "." on a line by itself
This is a test mail
.
250 2.0.0 s43Jaf12000302 Message accepted for delivery
QUIT
221 2.0.0 ip-10-0-0-51 closing connection
Connection closed by foreign host.
看來我libcurl使用真正的問題是 - 它會嘗試發佈VRFY，而我希望它使用RCPT TO - 這正是我在telnet會話中所做的。有沒有辦法在libcurl中設置該選項？還是有代碼的其他問題？