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Dear all,

I am trying to send out an SMTP email using the "mailman" but I keep getting a socket timeout in the process:

      SendEmail:
    DllDate: Mar  6 2015
    ChilkatVersion: 9.5.0.48
    UnlockPrefix: GUDFINMAILQ
    Username: GKRPROD01:SYSTEM
    Architecture: Little Endian; 32-bit
    Language: ActiveX
    VerboseLogging: 0
    sendEmailInner:
      renderToMime:
        createEmailForSending:
          xSigningAlg: sha1
          Auto-generating Message-ID
        --createEmailForSending
        renderToMime: Elapsed time: 0 millisec
      --renderToMime
      sendMimeInner:
        progressTotal: 5355
        ensureSmtpSession:
          ensureSmtpConnection:
            SmtpHost: mail.axelero.hu
            SmtpPort: 25
            SmtpUsername: gkristj
            SmtpSsl: 0
            StartTLS: 0
            smtpConnect:
              smtpHostname: mail.axelero.hu
              smtpPort: 25
              connectionIsReady:
                Need new SMTP connection
              --connectionIsReady
              smtpSocketConnect:
                socketOptions:
                  SO_SNDBUF: 262144
                  SO_RCVBUF: 4194304
                  TCP_NODELAY: 1
                --socketOptions
              --smtpSocketConnect
              smtpGreeting:
                readSmtpResponse:
                  SmtpCmdResp: 220 mail01d.mail.t-online.hu ESMTP You must authenticate before sending mail
                --readSmtpResponse
              --smtpGreeting
              ehloCommand:
                sendCmdToSmtp:
                  SmtpCmdSent: EHLO GKRPROD01<crlf>
                --sendCmdToSmtp
                readSmtpResponse:
                  SmtpCmdResp: 250-mail01d.mail.t-online.hu
                  SmtpCmdResp: 250-PIPELINING
                  SmtpCmdResp: 250-SIZE 26214400
                  SmtpCmdResp: 250-VRFY
                  SmtpCmdResp: 250-ETRN
                  SmtpCmdResp: 250-STARTTLS
                  SmtpCmdResp: 250-AUTH PLAIN LOGIN
                  SmtpCmdResp: 250-AUTH=PLAIN LOGIN
                  SmtpCmdResp: 250-ENHANCEDSTATUSCODES
                  SmtpCmdResp: 250-8BITMIME
                  SmtpCmdResp: 250 DSN
                --readSmtpResponse
              --ehloCommand
            --smtpConnect
          --ensureSmtpConnection
          ensureSmtpAuthenticated:
            smtpAuthenticate:
              smtp_host: mail.axelero.hu
              smtp_port: 25
              smtp_user: gkristj
              smtpAuthenticate:
                login_method: LOGIN
                auth_login:
                  smtpSendGet2:
                    sendCmdToSmtp:
                      SmtpCmdSent: AUTH LOGIN<crlf>
                    --sendCmdToSmtp
                    readSmtpResponse:
                      SmtpCmdResp: 334 VXNlcm5hbWU6
                    --readSmtpResponse
                  --smtpSendGet2
                  sendCmdToSmtp:
                    SmtpCmdSent: Z2tyaXN0ag==<crlf>
                  --sendCmdToSmtp
                  readSmtpResponse:
                    SmtpCmdResp: 334 UGFzc3dvcmQ6
                  --readSmtpResponse
                  sendCmdToSmtp:
                    SmtpCmdSent: {PasswordOrCredentials}
                  --sendCmdToSmtp
                  readSmtpResponse:
                    SmtpCmdResp: 235 2.7.0 Authentication successful
                  --readSmtpResponse
                --auth_login
              --smtpAuthenticate
              ConnectionType: Unencrypted TCP/IP
            --smtpAuthenticate
          --ensureSmtpAuthenticated
        --ensureSmtpSession
        sendSmtpEmail:
          sendWithPipelining:
            sendMailFrom:
              mailFrom: admin@thehuntinglounge.com
              sendCmdToSmtp:
                SmtpCmdSent: MAIL FROM:<admin@thehuntinglounge.com><crlf>
              --sendCmdToSmtp
            --sendMailFrom
            sendRcptTo:
              sendCmdToSmtp:
                SmtpCmdSent: RCPT TO:<gudfinnur@gkr2004.com><crlf>
              --sendCmdToSmtp
            --sendRcptTo
            sendCmdToSmtp:
              SmtpCmdSent: DATA<crlf>
            --sendCmdToSmtp
            readSmtpResponse:
              SmtpCmdResp: 354 Ready, steady, go
            --readSmtpResponse
            readRcptTo:
              readSmtpResponse:
                SmtpCmdResp: 250 2.1.0 Ok
              --readSmtpResponse
              recipient: gudfinnur@gkr2004.com
            --readRcptTo
            readSmtpResponse:
              SmtpCmdResp: 250 2.1.5 Ok
            --readSmtpResponse
            smtpRset:
              Sending RSET command.
              smtpSendGet2:
                sendCmdToSmtp:
                  SmtpCmdSent: RSET<crlf>
                --sendCmdToSmtp
                readSmtpResponse:
                  recvUntilMatch: Socket operation timeout.
                --readSmtpResponse
              --smtpSendGet2
            --smtpRset
          --sendWithPipelining
        --sendSmtpEmail
      --sendMimeInner
    --sendEmailInner
    Failed.
  --SendEmail
--ChilkatLog
Everything seems ok, until it is time to send out the actual body of the email. Any ideas?

Thanks,

Gudfinnur Kristjansson

asked Apr 16 '15 at 14:35

Gudfinnur%20Kristjansson's gravatar image

Gudfinnur Kristjansson
12

edited Apr 16 '15 at 14:37

Thanks! I'll have a look. I think it must have to do with SMTP pipelining. It's likely I won't have a further response until tomorrow..

(Apr 16 '15 at 16:20) chilkat ♦♦

Your SMTP server seems to be responding to each pipelined command in reverse order. For example, if I send email via smtp.gmail.com, it works as it should:

          sendWithPipelining:
            sendMailFrom:
              mailFrom: chilkat.support@gmail.com
              sendCmdToSmtp:
                SmtpCmdSent: MAIL FROM:<chilkat.support@gmail.com><crlf>
              --sendCmdToSmtp
            --sendMailFrom
            sendRcptTo:
              sendCmdToSmtp:
                SmtpCmdSent: RCPT TO:<admin@chilkatsoft.com><crlf>
              --sendCmdToSmtp
            --sendRcptTo
            sendCmdToSmtp:
              SmtpCmdSent: DATA<crlf>
            --sendCmdToSmtp
            readSmtpResponse:
              SmtpCmdResp: 250 2.1.0 OK i80sm5219011iod.6 - gsmtp
            --readSmtpResponse
            readRcptTo:
              readSmtpResponse:
                SmtpCmdResp: 250 2.1.5 OK i80sm5219011iod.6 - gsmtp
              --readSmtpResponse
              recipient: admin@chilkatsoft.com
            --readRcptTo
            readSmtpResponse:
              SmtpCmdResp: 354  Go ahead i80sm5219011iod.6 - gsmtp
            --readSmtpResponse
          --sendWithPipelining
          mimeDataSize: 347
          sendDataToSmtp:
            numBytesSent: 347
          --sendDataToSmtp
          sendCmdToSmtp:
            SmtpCmdSent: <crlf>.<crlf>
          --sendCmdToSmtp
          readSmtpResponse:
            SmtpCmdResp: 250 2.0.0 OK 1429223498 i80sm5219011iod.6 - gsmtp
          --readSmtpResponse
        --sendSmtpEmail

In both your case and mine, the order of commands is:

MAIL FROM
RCPT TO
DATA

The responses SHOULD be in this order:

250
250
354

(The 354 is the success response code for the DATA command)

Your SMTP server sends responses in reverse order:

354
250
250

Your SMTP server indicates it's doing pipelining, but it seems to be behaving incorrectly. I'll be adding a new property to explicitly turn off the pipelining feature in v9.5.0.49

link

answered Apr 16 '15 at 18:36

chilkat's gravatar image

chilkat ♦♦
11.8k316358421

Thanks for the quick response.

Yes, it all works fine in my development environment (HMailserver) but when I deploy to production (third party SMTP server), this problem comes up.

I'll be waiting for v9.5.0.49.

Gudfinnur Kristjansson

link

answered Apr 17 '15 at 03:25

Gudfinnur%20Kristjansson's gravatar image

Gudfinnur Kristjansson
12

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Asked: Apr 16 '15 at 14:35

Seen: 1,152 times

Last updated: Apr 17 '15 at 03:25

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