Using SmtpClient Through A Proxy?
Nov 29, 2011
I've got a vb program that sends an email using SmtpClient. I can't seem to get the message to pass the Proxy server (ccproxy). When sending thru outlook, I set the SMTP server to the Proxy server address, and in the username field I add a #and the SMTP server name following the username. I have tried several differt things here, but to no avail. Here is a sample of how I am trying to send this:
emailuserid = "me@mysmtp.com#mail.mysmtp.com"
emailpassword = "mypassword"
smtpserver = "192.168.0.1"
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Oct 15, 2011
I'm making a application to use in college to retrieve my calendar and other things in VB.NET. But my college uses a proxy so when I connect my laptop I need to change the internet settings in my web browser to view web pages. how I would send requests via a proxy server in VB.NET? Or is there a piece of software that I can download which tunnels all connections or is there a setting in win7 does this?
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Nov 24, 2010
I'd like to set the proxy for a web request. However, when I say, for example, request.proxy = "x.x.x.x:xxxxx", it gives me the error "String cannot be converted to webproxy". How can I get around this and actually set the proxy?
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May 1, 2009
I'm trying to send an email with the SMTPClient through a GMail account, but I'm having the problem that once I press the Send Button, the app freezes and I'm not getting any email.[code]...
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Feb 2, 2010
in my desktop application for sending mail I have used,
Dim obj1 As System.Net.Mail.SmtpClient
Dim Mailmsg1 As New System.Net.Mail.MailMessage()
[code]....
It was working fine but suddenly since from yesterday, 2 mails are sent by same obj1.Send() (In both the mails date time are same.) I have not changed code or used any loop for sending mail.
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May 9, 2011
I would like to know if there is a simple way to capture a transcript of the SMTP session when sending email using the System.Net.Mail.MailClient. In cases where an error is generated (ex: relaying denied) I would like to display the whole transcript to the user.
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May 4, 2012
I have tried multiple variations of the following code, but I still get the same result. I am trying to have the last line "Issue Description: ...." to appear on a new line. I have tried vbCrLf, vbCr, and & Environment.NewLine & _ None of which work.
Just a note: The other emails are properly formatted. Also, if I add put 2 vbCr (s) at the end of the 'Issue Title' line then it looks normal.This one in particular seems to be a thorn in my side.
The result:
The code:
Dim mail As New MailMessage()
Dim strbody As String
strbody = Nothing
[code]....
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Jul 16, 2011
Inner exception is "Unable to connect to remote server". I don't understand what I did wrong[code]....
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Aug 3, 2010
This is my first time trying to create a windows application that can be used to send an email message. It's a new requirement that we have to satisfy. Our customer information is saved in a database and we needed to send them some advertisement messages to some or all of them.
I created a windows application but unfortunately I couldn't send a single email message.
I tried to modify my code several times with no luck; each time I'm getting a different exception message. I tried to search the wen for more information regarding this issue but I end up with the same result.
I don't know if I must have an smtp server to relay the messages and be able to send them. If this is the case how I can do that? Is it possible to accomplish this with something else.
Dim Message As MailMessage = New MailMessage()
Dim Smtp As New SmtpClient()
Dim SmtpUser As New System.Net.NetworkCredential()
[Code]....
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Feb 2, 2012
I am using the SMTPClient in my VB.Net application to send emails. It appears it is getting an email signature from somewhere. Where does it get this signature? It looks like it is using an Outlook signature but our company no longer uses Outlook so the signature is wrong. Is there a way to remove the signature before sending the email?
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Sep 16, 2009
I have an issue with the System.Net.Mail.SMTPClient class - when it sends an email via the Send method it does not seem to send the QUIT command after sending the email so the connection stays open indefinitely (or until the SMTPClient instance is disposed of by the garbage collector) as far as I can tell.I thought oh well I must just need to call Close or Dispose on it but neither of those methods exist This is very basic, standard SMTP server usage - every server should send QUIT after it is done sending the other commands used to transfer the email, otherwise the remote server keeps the session open (and some servers have a limit on how many sessions can be open at a time or how many emails can be sent per session) so this could cause some serious problems.
Am I being daft or does there seem to be no way to make it do what pretty much every other SMTP client in the world does? I found a Microsoft Connect topic that had been created about this but it was 4 years old and the response from MS was that they would probably include something in the next version of the framework... which is what we are now on
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Feb 2, 2011
I am setting attributes for SmtpClient in program. It works fine in windowsxp but in windows7, it does not work every time. Some time it works and some time fails with failure message. Is there any known issue with SmtpClient in windows 7?
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Apr 7, 2009
I've this small application I've built which loops thru our database and generates 30000 mails and sends them using System.Net.SmtpClient, but it's not working very well. At times it won't send for a couple of minutes, all in all it takes about 48 hours for all the mails to be sent. Our mail provider says it's because the mail server can only handle 10 connections simultaneuosly and that would be the reason why it halts. I've looked over the SmtpClient class but can't find any property to set max amount of connections. Does this problem sound familiar? Could that be the reason? If so, is it possible to set the max amount of simultaneous connections from the smtpclient to the mailserver?
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Jul 13, 2011
I'm trying to create an application that sends an email to an smtp-server. The server is not set fixed, but will be looked up according to the domainpart of the email-address where the email should be sent to.
[Code]...
It would be quite useful, to know if the message was accepted by the mailserver and the message was successfully sent. What I am able so far is, that I can get the SMTP-Server error code (if there was an error (StatusCode 5xx) by using the System.Net.Mail.SMTPClient Object and its SendAsync Function. There, if there was an error, I get an Exception-Object in the Callback-Event of the SMTPClient
I'm well aware that not every mailserver will tell me if the mailaccount truly exists and then reject my mail with an errorcode but instead just accept the message and then delete it. Therefore I would be grateful for another Method to check if the mail was sent (note: not read, that would be the read confirmation)
The final purpose would be: Try to send an email to a recipient using it's domains mailserver and if it fails, proceed according to the errorcode (user does not exist -> abort / mailserver did not respond -> use another mailserver if available).
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Mar 16, 2012
I am trying to send mail using SmtpClient() within my Winforms VB.Net program .Here is the code:
Dim SmtpServer As New SmtpClient()
Dim mail As New MailMessage()
Dim _Attachment As String[code]......
For Host Name I using mail dot metaprosystems dot com, the user name and password are the user name and password I use to log into my mail server. This work when the To address is within my domain. For example bob at-sign metaprosystems.com. It does not work when I send to an email outside my domain. I get this exception in my catch block: "Mailbox name not allowed. The server response was: sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)"
Whether I include an attachment or not doesn't matter.I believe the problem is with my web hosting company, but so far they haven't come up with a solution. I need so advice as to what to tell them to do to fix this. Alternatively,
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Nov 5, 2009
I have an issue where emails sent out via the SmtpClient class in .NET go directly into the outlook junk mail folder (Outlook 2003 and 2007). If I send the exact same email (same body, same subject, to and from the same accounts as I use in .NET) from Outlook itself, it will come in fine and not be marked as junk mail. The only difference is the extra headers that Outlook appends to the email when it is sent directly from Outlook.
[Code]...
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Feb 8, 2012
I have a number of files that are generated in a function defined as:[code]These files are immediately printed and the files are automatically saved to a directory; the files themselves are not for use by the actual software users. I timestamp the files to keep them uniquely identified for auditing purposes.I've now received a requirement to email some of these files externally to the company, and someone has complained that the current filenames are not user-friendly.So, I tried copying the generated file to a temp directory, with a friendlier name, emailing the friendlier file, then deleting it, leaving my audit trail intact, like so: [code]This throws a System.IO.IOException on the line System. IO.File. Delete (friendly FilePath) because the file is still in use, after it has been emailed.I've taken out the email code, which makes the copying and deleting work fine, so it's apparently attaching the file to the email which causes the problem.I've also tried breakpointing before the delete line, waiting five minutes, confirming the email has been sent, then advancing the code, but the same exception is still thrown.
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Jun 21, 2012
The exact error I am getting in Visual Studio 2012 is:
error BC30456: 'Dispose' is not a member of 'System.Net.Mail.SmtpClient'.
Dim SmtpServer As New SmtpClient()
Dim mail As New MailMessage()
SmtpServer.Port = 25
[code]....
This should be an obvious error. You would think I was using .net framework 3.5 or lower as Dispose() was only added as a member to SmtpClient in .net 4.0. However, I am using 4.0!In the website property pages it states 4.0. Is there somewhere else that I need to set as 4.0?
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Jan 16, 2012
Private Function SendEMail(ByVal sendTo As String, ByVal subject As String) As Boolean
Try
''# Dim cr As New System.Net.NetworkCredential("me073055", "me271288")
''# Dim pr As New System.Net.WebProxy("172.31.100.25", 3128)
[code]....
I am using the given code to send emails ...i am behind a proxy server..is there any way to give the proxy settings to the smtp client??If not then how do i send emails from behind a proxy server..??These are the settings i need to use to connect to the internet...i need to set this settings in my email client also.
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Nov 17, 2011
Is it possible to change the computers IP/Proxy within VB I have done some research but have come up empty.
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Mar 8, 2009
I am using webclient to get and send various information through my vb.net application.All of the code works fine, except that whenever the webclient is used, it seems to lock-up the application (as if its going to crash) but then recovers after it has recieved/send the required data.I have googled around, and apparently i need to set the proxy to null (which is fine because i dont use a proxy anyway) but i dont know how do do this.Could anyone tell me how to set the proxy to null please?
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Apr 3, 2011
How to make a vb.net application that allows me to play online games using web proxies?
I tried
Private Sub enableProxy()
Dim proxy as new WebProxy("115.160.178.253:80")
WebRequest.DefaultWebProxy = proxy
End Sub
But that only works for httpwebrequests.
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Jul 6, 2011
Is it possible to set a WebBrowser control to use a proxy connection without changing all the other browsers also changing to that proxy?To clarify, I have an application that is monitoring a website but refreshing often enough during the day that I'm getting "you've made too many requests, please try again later". I'd like to get around that by using a proxy. Unfortunately not all anonymous proxies can be trusted for secure information like credit card information, so I only want to proxy the webbrowser control and not proxy any other non-application browsers.There is a site that explains quite well how to change the proxy (link not included, not certain on whether link posting allowed) but it changes the global settings on all browsers.I've tried to use 3rd party components (ex IPWorks HTTP control) however that doesn't work well with script-heavy sites that load and update dynamically - it only gets the empty skeleton of the page before being populated from the server DB.
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Feb 6, 2009
I want to use Proxy with web browser. I got Code which i found some where in vb forums.[code]Its not Working for me.. Please Help me. Random Proxy is added correctly in Listbox.
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Oct 6, 2011
I am attempting to make a browser. I have it set up to where it can support one proxy. My question, is, How would I make it to where the program would read from a text file, and use those proxies? 1 proxy per line?
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Mar 11, 2011
I have an application in vb.net which connects to a remote SQL Server. This works fine. But now I have the problem, that my application has to work in a network with a proxy.
My source-code for the sql query is at the moment:
c.ConnectionString = "server=xxx.xxx.xxx.xxx;uid=User;pwd=Pass;database=DBName; "
c.Open()
da.SelectCommand = (New MySqlClient.MySqlCommand("SELECT * FROM Table_S", c))
da.Fill(dt_S)
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Dec 9, 2011
code to use a Proxy IP in WebBrowser?
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Mar 19, 2012
Right now I'm using:
Dim newProxy As New IEProxy
If newProxy.SetProxy(proxyip) Then
....
[code].....
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Sep 20, 2011
I have strProxy and I want to load myurl.com and get the source code.
I've heard HttpWebRequest is the way to go for speed, since I will be loading many different webpages with proxies.
What is the simplest way to load the webpage with a proxy so I can then scrape the source?
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Sep 29, 2011
how to use a proxy ?I can use a proxy in vb with a webbrowser or httpwerequest but this not not use the proxy if i open my own browser :/What im wanting is to set a proxy in vb then open my own browser and i will be using the proxy.
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