# LIBCURL SendMail **URL:** \ **Category:** questions\ **Tags:** ssl, libcurl, email\ **Created:** [February 19, 2025, 6:35pm UTC](https://clarionhub.com/t/libcurl-sendmail/7930 "2025-02-19T18:35:22Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![edo1403](https://clarionhub.com/letter_avatar_proxy/v4/letter/e/46a35a/32.png) [@edo1403](https://clarionhub.com/u/edo1403)\ **Post date:** [February 19, 2025, 6:35pm UTC](https://clarionhub.com/t/libcurl-sendmail/7930/1 "2025-02-19T18:35:23Z")
I'm using LIBCURL for sending mail . Things that works is when SMTP port is 587 . Yesterday i needed to implement sending mail on server with port 465 . As result , I took a error that timeout exceeded . I supposed that problem is username , password , but on webmail client I found that everything passed , and really SMTP port is 465. Any help with errorcodes, when I played with port, changed it to 587 response was OK, Of course user didn't got mail. Why curl.send response to me that action is OK. Is there a way to validate mail (on existing) .before sending, mail was sent, but not received. Above all , what is strange with 465 port? Thanks ---
**Author:** ![Mike\_Duglas](https://clarionhub.com/user_avatar/clarionhub.com/mike_duglas/32/1061_2.png) [@Mike\_Duglas](https://clarionhub.com/u/Mike_Duglas)\ **Post date:** [February 19, 2025, 9:04pm UTC](https://clarionhub.com/t/libcurl-sendmail/7930/2 "2025-02-19T21:04:59Z")
Can you reproduce the issue with curl.exe? ---
**Author:** ![Mike\_Duglas](https://clarionhub.com/user_avatar/clarionhub.com/mike_duglas/32/1061_2.png) [@Mike\_Duglas](https://clarionhub.com/u/Mike_Duglas)\ **Post date:** [February 19, 2025, 9:41pm UTC](https://clarionhub.com/t/libcurl-sendmail/7930/3 "2025-02-19T21:41:58Z")
Also which version of libcurl are you using? I highly recommend to download the latest, there was a fix recently that may be related to your issue (“Explicit scheme was overwritten with the default protocol.”) ---
**Author:** ![edo1403](https://clarionhub.com/letter_avatar_proxy/v4/letter/e/46a35a/32.png) [@edo1403](https://clarionhub.com/u/edo1403)\ **Post date:** [February 20, 2025, 9:02am UTC](https://clarionhub.com/t/libcurl-sendmail/7930/4 "2025-02-20T09:02:00Z")
`C:\Users\user>curl --url "smtp://mail.srebrenik.ba:465" --ssl-reqd --mail-from "platneliste@srebrenik.ba" --mail-rcpt "platneliste@srebrenik.ba" --user "platneliste@srebrenik.ba:platneliste123" -T "C:\scan\email.txt"` ```auto % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 --:--:-- 0:02:00 --:--:-- 0 curl: (28) server response timeout ``` It seems that problem is on the other side , not on “our” . Libcurl is from 11.08.2024 . But problem is still here. What can be on the other side (mailserver) , to not receive commands other than “certified clients” . cPanel, L.L.C. Webmail , Outlook works fine ? ---
**Author:** ![Mike\_Duglas](https://clarionhub.com/user_avatar/clarionhub.com/mike_duglas/32/1061_2.png) [@Mike\_Duglas](https://clarionhub.com/u/Mike_Duglas)\ **Post date:** [February 20, 2025, 12:18pm UTC](https://clarionhub.com/t/libcurl-sendmail/7930/5 "2025-02-20T12:18:41Z")
Look into the detailed curl/libcurl log. ---
**Author:** ![edo1403](https://clarionhub.com/letter_avatar_proxy/v4/letter/e/46a35a/32.png) [@edo1403](https://clarionhub.com/u/edo1403)\ **Post date:** [February 21, 2025, 9:23am UTC](https://clarionhub.com/t/libcurl-sendmail/7930/6 "2025-02-21T09:23:25Z")
I tried to send mail from [smtp.gmail.com:465](http://smtp.gmail.com:465) using libcurl-master\examples\C6.3 apps\SendMail.exe No success . Program regulary send mails from [smtp.gmail.com:587](http://smtp.gmail.com:587) . Missing something ? ---
**Author:** ![Mike\_Duglas](https://clarionhub.com/user_avatar/clarionhub.com/mike_duglas/32/1061_2.png) [@Mike\_Duglas](https://clarionhub.com/u/Mike_Duglas)\ **Post date:** [February 21, 2025, 11:07am UTC](https://clarionhub.com/t/libcurl-sendmail/7930/7 "2025-02-21T11:07:27Z")
Try smtps:// protocol if smtp:// doesn’t work. ---
**Author:** ![edo1403](https://clarionhub.com/letter_avatar_proxy/v4/letter/e/46a35a/32.png) [@edo1403](https://clarionhub.com/u/edo1403)\ **Post date:** [February 21, 2025, 2:55pm UTC](https://clarionhub.com/t/libcurl-sendmail/7930/8 "2025-02-21T14:55:11Z")
Currently main commands in SendMaill app are: ```clarion curl.Init() curl.Server(CLIP(ServerName), CLIP(PortNumber)) curl.Account(CLIP(UserName), CLIP(Password)) curl.From(CLIP(EMailFromName)&'<'&CLIP(EMailFromEMailAddress)&'>') curl.AddRecipient(CLIP(MailToName)&'<'&CLIP(MailToEMailAddress)&'>','','') ! curl.UseSSL(CURLUSESSL_TRY) !try using ssl first. If it fails try without SSL ! curl.SetSSLVerifyPeer(FALSE) !curl --insecure curl.UseSSL(CURLUSESSL_ALL) curl.SetSSLVersion(CURL_SSLVERSION_TLSv1) curl.SetSSLVerifyPeer(FALSE) !curl --insecure; don't use it in real apps curl.SetOpt(CURLOPT_CONNECTTIMEOUT, 30) Res = curl.Send() ``` What is equivalent form smtps:// ? Thanks ---
**Author:** ![Mike\_Duglas](https://clarionhub.com/user_avatar/clarionhub.com/mike_duglas/32/1061_2.png) [@Mike\_Duglas](https://clarionhub.com/u/Mike_Duglas)\ **Post date:** [February 21, 2025, 3:34pm UTC](https://clarionhub.com/t/libcurl-sendmail/7930/9 "2025-02-21T15:34:35Z")
Add it to the server name: smtps://smtp.gmail.com ---
**Author:** ![Gustavo\_Saracca](https://clarionhub.com/user_avatar/clarionhub.com/gustavo_saracca/32/5355_2.png) [@Gustavo\_Saracca](https://clarionhub.com/u/Gustavo_Saracca)\ **Post date:** [February 21, 2025, 7:03pm UTC](https://clarionhub.com/t/libcurl-sendmail/7930/10 "2025-02-21T19:03:06Z")
I am using this class and it is working fine. ```auto curl TCurlMailClass ``` ---
**Author:** ![edo1403](https://clarionhub.com/letter_avatar_proxy/v4/letter/e/46a35a/32.png) [@edo1403](https://clarionhub.com/u/edo1403)\ **Post date:** [February 24, 2025, 7:50am UTC](https://clarionhub.com/t/libcurl-sendmail/7930/11 "2025-02-24T07:50:11Z")
Thanks, It works . smtps://smtp.gmail.com do the things.