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Simple TLS/SSL supported SMTP client for Qt5

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  • T Offline
    T Offline
    Time Markov
    wrote on last edited by
    #7

    Hi,
    I used these settings for yahoo SMTP:
    Mail SMTP server address: smtp.mail.yahoo.com (also with plus.smtp.mail.yahoo.com, doesn't work)
    Mail SMTP user name: Your full Yahoo! Mail email address (including "@yahoo.com")
    Mail SMTP password: Your Yahoo! Mail password
    Mail SMTP port: 465
    Mail SMTP TLS/SSL required: yes
    Thanks in advance
    Tha

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    0
    • M Offline
      M Offline
      MichelSM
      wrote on last edited by
      #8

      hello I used this same project in linux and it worked perfectly

      but when I needed to use it on windows I had this error:

      @
      Starting C:\Users\eng-IEK\Desktop\smtp_multiple_files\build-smtp-Desktop_Qt_5_2_0_MSVC2012_64bit-Debug\debug\smtp.exe...
      No attachments found
      stateChanged QAbstractSocket::HostLookupState
      stateChanged QAbstractSocket::ConnectingState
      stateChanged QAbstractSocket::ConnectedState
      QSslSocket: cannot call unresolved function SSLv23_client_method
      QSslSocket: cannot call unresolved function SSL_CTX_new
      QSslSocket: cannot call unresolved function SSL_library_init
      QSslSocket: cannot call unresolved function ERR_get_error
      error QAbstractSocket::SocketError( 21 )
      QSslSocket: cannot call unresolved function ERR_get_error
      error QAbstractSocket::SocketError( 20 )
      Connected
      C:\Users\eng-IEK\Desktop\smtp_multiple_files\build-smtp-Desktop_Qt_5_2_0_MSVC2012_64bit-Debug\debug\smtp.exe exited with code 0
      @

      anyone have any idea what it might be? maybe some lib?

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      • SGaistS Offline
        SGaistS Offline
        SGaist
        Lifetime Qt Champion
        wrote on last edited by
        #9

        Did you install and openssl on your window machine ? Is your Qt built with SSL support ?

        Interested in AI ? www.idiap.ch
        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

        O 1 Reply Last reply
        0
        • M Offline
          M Offline
          MichelSM
          wrote on last edited by
          #10

          I installed OpenSSL and tried again and could not anyway
          how do I find out if my Qt is with support for SSL?

          ALL on linux is easier kkkk

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          0
          • SGaistS Offline
            SGaistS Offline
            SGaist
            Lifetime Qt Champion
            wrote on last edited by
            #11

            First thing, check that you install OpenSSL 64bit to match your Qt architecture.

            Then check that your PATH variable contains the folder of the OpenSSL libs

            Interested in AI ? www.idiap.ch
            Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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            • M Offline
              M Offline
              MichelSM
              wrote on last edited by
              #12

              thanks for the help
              i have installed the 32bits version, and this don't work

              now whit the 64bits this worked

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              • Y Offline
                Y Offline
                yyang2000
                wrote on last edited by
                #13

                Hi all,

                I am working on application using Qt4.84 and the target system is linux LTIB BSP. I want the target system can send out an email to external someone or some kind of mail box via the wifi network or wireless 3G/4G modem. I wonder if this SMTP client can solve my requirement? Since you are using Qt5, is it a problem for me to use Qt4.8.4? If you have any suggestion for the Qt4.8.4 platform, please let me know.

                Thanks,
                Bill

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                • G Offline
                  G Offline
                  gowikel
                  wrote on last edited by
                  #14

                  Thanks, I was looking for a tutorial for do a small application than send some emails when I found this.

                  Thanks a lot

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                  0
                  • P Offline
                    P Offline
                    plinioandrade
                    wrote on last edited by
                    #15

                    CONGRATULATIONS TO "This Guy!!!":http://morf.lv
                    He developed the most simple and useful Qt 5 compatible SMTP Client.

                    1 Reply Last reply
                    0
                    • F Offline
                      F Offline
                      fab_
                      wrote on last edited by
                      #16

                      Hello everyone.
                      The last post is kinda long ago so I'm hoping the someone will read this:

                      I have an application which is required to send emails. So I setup a local mailserver and pulled bluetiger9's code here:

                      https://github.com/bluetiger9/SmtpClient-for-Qt

                      I was able to build a shared .dll file in release Mode. Its 120kb in size.

                      Could someone kindly help me out now on how I can use this dll in my application?
                      Lets say i want to use it in my application in debug Mode. It looks like it isnt enough to put the .dll file in the corresponding folder. Im not sure what extra info to include about what I've done. Please let me know

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                      • SGaistS Offline
                        SGaistS Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on last edited by
                        #17

                        Hi and welcome to devnet,

                        Do you mean compile your application to use that library or use it when deploying your application ?

                        Interested in AI ? www.idiap.ch
                        Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                        • F Offline
                          F Offline
                          fab_
                          wrote on last edited by
                          #18

                          Hello!

                          It's both I guess.
                          I want to use the functions that lib gives me in my code for my application.

                          When i deploy the application i usually have to provide all neccessary dll files in the same folder (libmysql.dll) for example. So no static linking if thats what you're referring to.

                          If you look at the github page of my first post. There is an example of its usage right on the front page. I'm trying to achieve to get this example to run properly.
                          https://github.com/bluetiger9/SmtpClient-for-Qt

                          After I made my first post I spent the rest of the night tinkering with it and I managed to get something going:

                          Following this;
                          https://wiki.qt.io/How_to_create_a_library_with_Qt_and_use_it_in_an_application
                          I saw that MinGW (I use MinGW)creates a .dll and a .a file. I copied both those files in the folder containing the project where there supposed to be used. I also copied the header files in the same folder.

                          Here is my .pro file:

                          QT       += core
                          QT       -= gui
                          
                          TARGET = SMTPEmailTestDLL
                          CONFIG   += console
                          CONFIG   -= app_bundle
                          
                          TEMPLATE = app
                          
                          win32:CONFIG (release, debug|release): LIBS += -L$$PWD/ -lSMTPEmail
                          else:win32:CONFIG (debug, debug|release): LIBS += -L$$PWD/ -lSMTPEMail
                          else:unix: LIBS += -L$$PWD/ -lSMTPEmail
                          
                          INCLUDEPATH += $$PWD/
                          DEPENDPATH += $$PWD/
                          
                          SOURCES += main.cpp
                          

                          This actually enabled me to build and run the programm as seen on bluetiger9's github front page.

                          But, upon running it either terminates with return value -1073741515 or I get the message that "The process to debug couldnt be adressed: wrong parameter"

                          Weirdly, although receiving those messages, the programm sometimes actually sends an Email out to my gmail Account (be it with a wrong timestamp) as intended, but sometimes it just doenst.

                          So I might've done something wrong on the way.
                          I'm sorry if the information I'm giving is somewhat blurry. I appreciate you taking some time for this SGaist!

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                          • F Offline
                            F Offline
                            fab_
                            wrote on last edited by
                            #19

                            Nevermind, I got it fixed. Turns out you shouldnt rename the dll file after building it. Its name should be the same as specified in TARGET

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                            • D Offline
                              D Offline
                              DoctorD
                              wrote on last edited by
                              #20

                              I am using this with Qt 5.7. The email is successfuly sent but then I get this error in the end :

                              Server response code: "221"
                              Server response: "221 2.0.0 closing connection y144sm8277194wmd.18 - gsmtp\r\n"
                              error QAbstractSocket::RemoteHostClosedError
                              stateChanged QAbstractSocket::UnconnectedState
                              disconneted
                              error "The TLS/SSL connection has been closed"

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                              • MRenM Offline
                                MRenM Offline
                                MRen
                                wrote on last edited by
                                #21

                                Hi, good one !

                                Thanks for sharing !

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                                • N Offline
                                  N Offline
                                  nateliv
                                  Banned
                                  wrote on last edited by nateliv
                                  #22
                                  This post is deleted!
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                                  • SGaistS Offline
                                    SGaistS Offline
                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on last edited by
                                    #23

                                    Did you check whether your server uses an outdated protocol that is either not supported anymore or disabled by default for security reasons.

                                    Interested in AI ? www.idiap.ch
                                    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

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                                    • N Offline
                                      N Offline
                                      Nyrenthia
                                      Banned
                                      wrote on last edited by Nyrenthia
                                      #24
                                      This post is deleted!
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                                      • S Offline
                                        S Offline
                                        sanshow
                                        Banned
                                        wrote on last edited by
                                        #25
                                        This post is deleted!
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                                        • W Offline
                                          W Offline
                                          work
                                          Banned
                                          wrote on last edited by
                                          #26
                                          This post is deleted!
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