LIBCURL SendMail

1

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

2

Can you reproduce the issue with curl.exe?

3

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.”)

4

C:\Users\user>curl --url "smtp://mail.srebrenik.ba:465" --ssl-reqd --mail-from "[email protected]" --mail-rcpt "[email protected]" --user "[email protected]:platneliste123" -T "C:\scan\email.txt"

  % 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 ?

5

Look into the detailed curl/libcurl log.

6

I tried to send mail from smtp.gmail.com:465 using libcurl-master\examples\C6.3 apps\SendMail.exe
No success . Program regulary send mails from smtp.gmail.com:587 .
Missing something ?

7

Try smtps:// protocol if smtp:// doesn’t work.

8

Currently main commands in SendMaill app are:

    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

9

Add it to the server name: smtps://smtp.gmail.com

10

I am using this class and it is working fine.

curl        TCurlMailClass
11

Thanks, It works .
smtps://smtp.gmail.com do the things.

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