Set The Max Amount Of Simultaneous Connections From The Smtpclient To The Mailserver?
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?
Using VB.Net and SQL Server 2008 R2: I have recently had a database that using sp_who2 reflects a connection ".Net SqlClient Data Provider" is still active even though the .Net application has closed and disposed of all connections.
i have a datagridview binded with the datatable via its datasource property....now i want to add the Amount column of the dgv and display the total amount in the textbox,if the amount is greater than a certain value then i want the cell to coloured red so i did this code and it worked great:
Dim i, j As Integer For i = 0 To DataGridView1.RowCount - 1 j += Me.DataGridView1.Rows(i).Cells("Amount").Value Next
[code]....
but my problem is that i want the red colour of the cell to blinkafter every 2 seconds....how to do this?i need to handle the timer tick event for this but i am not able to do this.....
im trying to make a simple program that calculates the time it takes to cover x amount off nautical miles at x amount off knots, the code i have so far is this :
Code:Public Class Form1 Private Sub Label2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label2.Click End Sub
Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
[Code]...
so if i say want to cruise 29 miles at 12 knts it gives me an awnser of 2 hours 24.6 mins instead of 2 hours 25. Although i do realise that 2 hrs 24.6 is technicaly right i was wondering if anyone here could help me with getting it into the correct format?
im trying to make a fast food program on which the user will input the amount that he has, then he will check on what he wants, by using check boxes. There are 7 different check boxes with 7 different amounts of money. I have the program somewhat finished (thanks for the people that helped me before) but theres still a couple of things that I still need to get finished but I dont know how to.I need to be able to get how much money the user has (this will be entered threw a text box, I think I accidentally messed this part up, because I cant get it to work right, (theres alreasy a permit amount of money in there and it needs to be what the user enters instead of the permit, 5.59, one) and this will be the maximum amount he can spend, then the user will check on the food he wants (and the program will add the sales tax also) then it will produce an answer saying if you have enough money or if you dont. But what im confused on is how do I get the users amount of money and make it the maximum mount he can spend and make sure it doesnt go over the amount that he has checked.[code]
I am working in a point of sale system in Vb express 2008. I want to convert the Amount in Figures to Words like: How to conver the amount of $ 1,550,325.45 to Amount in words as DOLLARS: ONE MILLION, FIVE HUNDRED FIFTY THOUSAND, THREE HUNDRED TWENTY FIVE AND FORTY FIVE CENTS.
I am working in a point of sale system in Vb express 2008.I want to convert the Amount in Figures to Words like:How to conver the amount of $ 1,550,325.45 to Amount in words as DOLLARS: ONE MILLION, FIVE HUNDRED FIFTY THOUSAND, THREE HUNDRED TWENTY FIVE AND FORTY FIVE CENTS.Please advise how to code for that in Vb express.
Threads a + b, (both are trying to delete files).a gets called first, then b while a is still running.b deletes the file successfully but a doesn't.If I run a on its own, a's file deletes fine.
When I step through the code I can see that a's MultiAttemptFilename gets overwritten with b's.
I don't understand.I have an ajax call pointing to a generic handler which passes the filename along with it.In my handler I have the following code:
I have a class that uses a BackGroundWorker to download a single file using HttpWebRequest and HttpWebResponse
Downloading single file works.
But if I make two objects of that class and start downloading 2 different files simultaneously, there is nothing produced. Execution exits after getResponse() without any error or exception.
Is there any way to achieve simultaneous file download?
I am developing desktop search engine. For that i am maintaining indexed database with file name and their path. The indexed database is created at once by scanning all hard disk. This indexed database is further updated when user creates, deletes or renames file. The updation task is carried out by an windows service application and for searching files on hard disk I have created another windows aplication. The problem is that when windows service is updating database, windows application can not read database. It gives error 'Cannot open user default database. Login failed.Login failed for user 'WINXPSwapni'.
is it possible to have 2 simultaneous key presses with the keydown event. I have a keydown sub with 2 sets of keys mapped to move 2 different pictureboxes. But when I press a key for the other picturebox, the first one stops moving. How do I get both to work at the same time?
I need to retrieve multiple objects from an external system. The external system supports multiple simultaneous requests (i.e. threads), but it is possible to flood the external system - therefore I want to be able to retrieve multiple objects asynchronously, but I want to be able to throttle the number of simultaneous async requests. i.e. I need to retrieve 100 items, but don't want to be retrieving more than 25 of them at once. When each request of the 25 completes, I want to trigger another retrieval, and once they are all complete I want to return all of the results in the order they were requested (i.e. there is no point returning the results until the entire call is returned). Are there any recommended patterns for this sort of thing?
I have a service that needs to run several independent processes, my problem is that it only creates up to 23, from the 24th and so on the processes are not started and a DW20.EXE window error is displayed, it only says that the there has been an unhandled exception and that the proceess is going to be closed. Inside the process.start block there is no error so I guess it could be some limitation somewhere.
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]...
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:
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.
I've found out that if two instances of an SSRS report run at the same time, any Code variables declared at the class level (not inside a function) can collide. I suspect this may be the cause of our report failures and I'm working up a potential fix.The reason we're using the Code portion of SSRS at all is for things like custom group and page header calculation. The code is called from expressions in TextBoxes and returns what the current label should be. The code needs to maintain state to remember what the last header value was in order return it when unknown or to store the new header value for reuse
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.
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
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()
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?
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
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?
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).
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,
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.
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.
