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82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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* SPDX-License-Identifier: curl
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*
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***************************************************************************/
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/* <DESC>
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* Verify an SMTP email address
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* </DESC>
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*/
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#include <stdio.h>
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#include <string.h>
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#include <curl/curl.h>
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/* This is a simple example showing how to verify an email address from an
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* SMTP server.
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*
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* Notes:
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*
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* 1) This example requires libcurl 7.34.0 or above.
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* 2) Not all email servers support this command and even if your email server
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* does support it, it may respond with a 252 response code even though the
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* address does not exist.
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*/
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int main(void)
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{
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CURL *curl;
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CURLcode res;
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struct curl_slist *recipients = NULL;
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curl = curl_easy_init();
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if(curl) {
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/* This is the URL for your mailserver */
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curl_easy_setopt(curl, CURLOPT_URL, "smtp://mail.example.com");
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/* Note that the CURLOPT_MAIL_RCPT takes a list, not a char array */
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recipients = curl_slist_append(recipients, "<recipient@example.com>");
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curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, recipients);
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/* Perform the VRFY */
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res = curl_easy_perform(curl);
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/* Check for errors */
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if(res != CURLE_OK)
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fprintf(stderr, "curl_easy_perform() failed: %s\n",
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curl_easy_strerror(res));
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/* Free the list of recipients */
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curl_slist_free_all(recipients);
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/* curl will not send the QUIT command until you call cleanup, so you
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* should be able to reuse this connection for additional requests. It may
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* not be a good idea to keep the connection open for a long time though
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* (more than a few minutes may result in the server timing out the
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* connection) and you do want to clean up in the end.
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*/
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curl_easy_cleanup(curl);
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}
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return 0;
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}
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