Using Smtpclient To Send Email Outside My Domain Is Not Working?
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,
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()
Working with a listbox to send email and I have the ff code -
Dim EmailAddressFrom As String EmailAddressTo = lstbxEmailAddress.SelectedValue.ToString() MessageBox.Show("To Address is ", EmailAddressTo)
When I run this, in my message box, I get -
"System.Data.DatarowView" as the title of my message box "To Address is " And when hit F8 to continue debugging I get the ff error msg - "The specified string is not in the form required for an e-mail address."
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
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?
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 am sending an email with an attachment using the following Code
Dim msg As New System.Net.Mail.MailMessage(req.EmailFrom, req.EmailTo) Dim att As New System.Net.Mail.Attachment("C:Documents and SettingsmichaelrDesktop1216259.pdf") With msg .Attachments.Add(att)
[code]....
The file size of the attachment is 396KB, upon the recipient receiving the email outlook shows the file size as 543Kb. Strange thing is if I send an email with the same attachment using outlook the file size is 396Kb.I understand that file sizes can increase due to the attachment being base 64 encoded as opposed to just raw binary.What I am failing to see is why outlook send a file which is 396KB in size but in code when sending it, the same file is 543Kb.
how would i implement a way that i would not hard code the email message that the application send to email recipients? how will i also include email message formatting (text in bold, italic, etc.)?
I'm trying to get my program to send very simple text email messages. I did do a search beforehand, and found that I was having the same issue as someone else, but the specific question I have was not answered --
I've learned that if you're trying to send mail, you need an SMTP server... I found this list here but every one of them I've tried yields the same "Failure sending mail" error.
Here's my
Dim mail As New MailMessage()
mail.From = New MailAddress("me@mycompany.com") mail.To.Add("destination-email@whatever.com")
[CODE]...
Is the problem that I need to show "credentials" (i.e. user/pass)? If so, what would those credentials be? Can I use my yahoo email SMTP server with my login info to do it? And is this all I'd need to add to add the credentials?
smtp.Credentials = New NetworkCredential("MyUsername", "MyPassword") (before the smtp.Send, of course)
I wouuld like to open outlook with new email with provided subject line, body message and attachment but no email address. User will enter the email address and click send . How can I do this?
I used following code but it gives me error for to address
i can send email through vb.net behind code but how do i implement so that the recipient cannot see the sender email and only the name?i had done alot of research but i can't find any solution about this problem
Are there any good books out there that will show someone how to set up a form using Visual basic that will take information and send it to the server and then send a recipient an Email?
make an app for me that just sends an email of text from a textbox. if u have a source to one or anything like that because i have tried over and over and it just doesnt work
I want to send an email using the default email client. If this is not possible, then Outlook will be the client of choice.* I want to be able to send attachments.* I would like to use Read Receipt on outgoing emails if possible.
I have programmed a software that send emails it has CheckedListBox1 used to add emailsand CheckedListBox2 used to add atachments to be send to selected emails from CheckedListBox1so how to send email to checked email(s) from checklistbox1 with checked attachment(s) from checklistbox2?
The problem is if I send more than one email to myself my email address keeps repeating itself in the "To" box. If I send an email to myself 3 times, the 3rd e-mails "To" box will say:
I have a function that works perfectly when I attempt to add a user from the same domain into a group of the same domain.
Function AddUserToGroup(ByVal strUserDN As String, ByVal strGroupDN As String, ByVal strGRPDC As String, ByVal strUserDC As String) As Boolean Dim oUser As DirectoryEntry
[Code]....
The error is actually being thrown on the Invoke line, but as I said earlier, if the user is in the same domain, this works perfectly.
the following code gives me error even though it worked on youtube, its supposed to send an email using vb [URL] (i was connected to the internet) (the email adresses and password are correct in my code
I wrote a program that runs on a timer and pings the computers on the network, if any of them go offline it emails me. The problem is the timer runs every 20 seconds and if a computer is rebooted I get email 15 - 20 times until it comes back online.
Is there a way for it to only email me once every 20 minutes or so? Or to only email me if a different computer goes offline, then I don't keep getting the same email.
I am trying to send registration/ activation information via email, but don't want to store my authentication within the vb.net app and therefore not wanting to use .NET SMTP. I have the below php script that works from a website, but I can't seem to get the variables sent to it using the code posted. Any advice with either the .NET code or the php code?
Dim errorString As String = "test string" Dim postData = "errorString=" & errorString Dim request As WebRequest = WebRequest.Create("http://webaddress.com/test.php")
I'm Using Visual Basic and the APP consists of 2 Textbox and a Command Button (Simply Testing it). When another user downloads the App and type their texts and click the command button, it would be sent to my email account.
I need to send an email via SMTP, I have my SMTP in a Linux Centos Server, and I created the software to send emails with VB.NET 2010.After using the namespace : System.Net.Mail.SmtpClient, I receive an exception :
Mailbox name not allowed.The server response was: sorry, that domain isn't in my list of allowed rcpthosts (#5.7.1)
I'm trying to create a function that sends an email everyday at a specific time. I thought threading.timer would work but i haven't figured it out yet. I don't get errors when its executed but it also does nothing.
Private Shared Sub Main(ByVal args As String()) 'get today's date at 9:00 AM Dim nineAM As DateTime = DateTime.Today.AddHours(11)
why this wont send...ive checked email address and password numerous times...
Imports System.Net.Mail Protected Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click Dim Mail As New MailMessage Mail.From = New MailAddress("myemail@googlemail.com")
I'm working with a program that can send email supporting yahoo mail and gmail. And it works in gmail(if the sender utilizes gmail) But it won't work if the sender is using yahoo mailHere is my code:
mail.From = New MailAddress(TextBox2.Text) mail.To.Add(New MailAddress(TextBox1.Text)) mail.Subject = TextBox4.Text
