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Jangla
Newbie
Joined: 18 June 2007
Location: United Kingdom
Online Status: Offline
Posts: 9
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| Posted: 10 September 2009 at 3:05am | IP Logged
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I've got a little email app that has this function to send a mail:
Dim smtp = New Smtp
smtp.LicenseKey = "XXXXX-XXXXXXXXXXXXXXXXXXXXX-XXXX"
Dim mailer = New Smtp()
mailer.SmtpServers.Clear()
mailer.SmtpServers.Add("our.mail.serveraddress", "userName", "password", AuthenticationMethods.SaslLogin Or AuthenticationMethods.SaslPlain)
mailer.Connect()
mailer.From.Email = emailFromAddress
mailer.From.DisplayName = emailFirstName & " " & emailSurname
mailer.To.AsString = emailFirstName & " " & emailSurname & " <" & emailToAddress & ">"
mailer.Subject = emailSubject
mailer.BodyPlainText = emailBody
Try
mailer.Send()
Catch ex As MailBeeException
MessageBox.Show(ex.Message, "Error")
Return False
Finally
End Try
Return True
End Function
The trouble is that when the application is running without any break points in it, the server chucks a winsock error. When I set a break point on the send command and hold the code there for about 10 seconds, the email sends perfectly.
This is the winsock error:
Thu 2009-09-10 10:00:06: ----------
Thu 2009-09-10 10:00:28: Session 8325; child 1; thread 3796
Thu 2009-09-10 10:00:28: Accepting SMTP connection from [XXX.XX.X.XXX:XXXXX]
Thu 2009-09-10 10:00:28: --> 220 mail.accommodia.com. ESMTP MDaemon 10.1.1; Thu, 10 Sep 2009 10:00:28 +0100
Thu 2009-09-10 10:00:28: <-- EHLO ourdomain.co.uk
Thu 2009-09-10 10:00:28: --> 250-mail.ourdomain.com. Hello ourdomain.co.uk, pleased to meet you
Thu 2009-09-10 10:00:28: --> 250-ETRN
Thu 2009-09-10 10:00:28: --> 250-AUTH=LOGIN
Thu 2009-09-10 10:00:28: --> 250-AUTH LOGIN CRAM-MD5
Thu 2009-09-10 10:00:28: --> 250-8BITMIME
Thu 2009-09-10 10:00:28: --> 250 SIZE
Thu 2009-09-10 10:00:28: <-- AUTH LOGIN
Thu 2009-09-10 10:00:28: --> 334 VXNlcm5hbWU6
Thu 2009-09-10 10:00:28: <-- SmFtZXM=
Thu 2009-09-10 10:00:28: --> 334 UGFzc3dvcmQ6
Thu 2009-09-10 10:00:28: <-- ******
Thu 2009-09-10 10:00:28: --> 235 Authentication successful
Thu 2009-09-10 10:00:28: Authenticated as myemail@address.com
Thu 2009-09-10 10:00:28: <-- MAIL FROM:<sender@ourdomain.co.uk>
Thu 2009-09-10 10:00:28: --> 250 <sender@ourdomain.co.uk>, Sender ok
Thu 2009-09-10 10:00:28: <-- RCPT TO:<recipient@email.com>
Thu 2009-09-10 10:00:28: --> 250 <recipient@email.com>, Recipient ok
Thu 2009-09-10 10:00:28: <-- DATA
Thu 2009-09-10 10:00:28: Creating temp file (SMTP): c:\mdaemon\temp\md50000019421.tmp
Thu 2009-09-10 10:00:28: --> 354 Enter mail, end with <CRLF>.<CRLF>
Thu 2009-09-10 10:00:28: Message size: 594 bytes
Thu 2009-09-10 10:00:28: Passing message through AntiVirus (Size: 594)...
Thu 2009-09-10 10:00:28: * Message is clean (no viruses found)
Thu 2009-09-10 10:00:28: ---- End AntiVirus results
Thu 2009-09-10 10:00:28: Socket error sending response to DATA
Thu 2009-09-10 10:00:28: * Winsock Error 10054 Connection was reset by the other side!
Thu 2009-09-10 10:00:28: SMTP session terminated (Bytes in/out: 747/432)
Thu 2009-09-10 10:00:28: ----------
Thu 2009-09-10 10:00:29: Session 8326; child 1; thread 3796
Thu 2009-09-10 10:00:29: Accepting SMTP connection from [115.75.55.131:19764]
Thu 2009-09-10 10:00:29: * Winsock Error 10054 Connection was reset by the other side!
Thu 2009-09-10 10:00:29: SMTP session terminated (Bytes in/out: 0/0)
Thu 2009-09-10 10:00:29: ----------
Any ideas? (naturally I've chnaged data above to hide passwords, users names, domains etc.)
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Alex
AfterLogic Support
Joined: 19 November 2003
Online Status: Offline
Posts: 2206
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| Posted: 10 September 2009 at 3:27am | IP Logged
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Does the problem occur only with this mail server?
Doesn't the problem occur if you send the same e-mail through the same server using the same settings with another mail client (e.g. Thunderbird) running on the same computer where MailBee.NET is running?
Are you sure no mail filter like a firewall, traffic meter, anti-spam gateway and so on isn't intercepting the connection? Often, mail filters may cause problems during SMTP conversation.
Regards,
Alex
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Jangla
Newbie
Joined: 18 June 2007
Location: United Kingdom
Online Status: Offline
Posts: 9
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| Posted: 10 September 2009 at 5:39am | IP Logged
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Not sure about whether it's only with this server.
I can send an email from one email account to another through the server using outlook.
Definitely no wirewall stuff. The odd thing is I have another app that works in a similar way, uses almost identical code and that works fine.
Very odd. Will keep plugging at it.
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Igor
AfterLogic Support
Joined: 24 June 2008
Location: United States
Online Status: Offline
Posts: 6104
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| Posted: 10 September 2009 at 5:59am | IP Logged
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If you'd like AfterLogic Support Team to help you on this, please provide us with a test account we could use to reproduce and investigate the issue.
--
Regards,
Igor, AfterLogic Support
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Jangla
Newbie
Joined: 18 June 2007
Location: United Kingdom
Online Status: Offline
Posts: 9
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| Posted: 10 September 2009 at 6:07am | IP Logged
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Translation = Firewall stuff 
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Jangla
Newbie
Joined: 18 June 2007
Location: United Kingdom
Online Status: Offline
Posts: 9
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| Posted: 10 September 2009 at 6:09am | IP Logged
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Igor wrote:
If you'd like AfterLogic Support Team to help you on this, please provide us with a test account we could use to reproduce and investigate the issue.
--
Regards,
Igor, AfterLogic Support |
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Thanks. For the moment I'm going to try and crack it myself.
I have noticed something though. If I use:
if (mailer.Send())
...
I get far more successful sends than if I simply say:
mailer.Send()
...even if there's nothing actually in the If block.
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Topic: Winsock error when code not in break mode
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