Configuration :: System.Net.Mail.SmtpClient Credentials Don't Work With Exchange 2010
Aug 29, 2010
I run a Exchange 2010 server and created an account for one of my websites to send e-mails.
The webserver's IP is even listed on the [Organization Configuration] -> [Hub Transport] -> [Global Settings] -> [Transport Settings] -> [Message Delivery] list.
The code sets a set of Network Credentials, but setting incorrect or correct settings, it doesn't matter; if I list external e-mail addresses, I get a "Mailbox unavailable. The server response was: 5.7.1 Unable to relay for <address>" message, 'local' addresses that are cc-ed, do get delivered...
When checking with telnet, I noticed that the only AUTH option was AUTH NTLM, but when checking the NetworkCredentails, it stated that NTLM should would.
How do I format the body of the email so it doesn't look so old school :) I've tried sending html through it, but it just comes out as html in the body of the email.
Using Visual Studio 2010 Web Developer Express (vb.net code) with SqlDataSource to SQL Server 2008.
I am developing an email form to my users to send email to vendors with an attachment. The aspx page is quite simple -- 2 dropdownlists, a fileupload control, and a send email button. They select their store (which populates the "From" address of the email). They select the Vendor (which populates the "To" address of the email). Then they browse for the file attachment and click "send email"
I just can't get outside emails to send. I do not get any error messages in the web page. If I change the email1 and email2 in SQL Server Vendor table to an email address (mine) within the domain I get the emails. However when I change to a test hotmail, yahoo, or gmail accounts the emails never get there. I have absolutely no confidence that my programming is correct so before I go to the IT Manager again I really need to verify I am not missing something on my end. We did make a change on the exchange server to allow anonymous email from my webserver and still didn't work.
Here is my webconfig file:
[Code]....
Here is my code-behind:
[Code]....
Here is my aspx page:
[Code]....
I have been playing around with the programming for 2 days making 1 change at a time then testing to see if external email is sending. I'm going quite crazy at this point ...
I've put in breakpoints and debugged. Below is the output from the latest test. I have concerns about the clientDomain being "SQLSVR" which is my webserver name, our domain is "chuckanddons.com". As well as the line "Domain" that is blank " " under NetworkCredential. Also the line TargetName "SMTPSVC/exchangesvr"
I have a web application that is running on IIS within my company's domain, and is being accessed via intranet. I have this application sending out email based on some user actions. For example, its a scheduling application in part, so if a task is completed, an email is sent out notifying other users of that.
The problem is, the email works flawlessly in some cases, and not at all in others. I have a login.aspx page which sends out report emails when the page is loaded (its loaded once a day via windows task scheduler) - this always seems to work perfectly. I have an update page which is supposed to send email when text is entered and the "Update" button is clicked - this operation will fail most of the time. Both of these tasks use the same static overloaded method I wrote to send email using System.Net.Mail.
I have tried using gmail as my smtp server (instead of our internal one), and get the same results. I investigated whether having the local SMTP Service running makes any difference, and it doesn't seem to. Besides, since C# is server-side code, shouldn't it only matter whats running on the server, and not the client?Below is my code to send email.
there is problem of low disc space or FAT partitioning but
I don't what kind of disc space is used in smpt server for the sending mail and what is this
FAT partitining is used in this and how to configure this , all together what is the exact solution of the code error no. 4.3.1 Insufficient system resources for sending mail .
I am using System.Net.Mail in C#.net website. Basically, I use this to send email alerts to users when some action has occurred.
The problem is, when some PC's are used to trigger an email, nothing happens. I have 2 PC's in my office, and when I do the action on one of them, it works, but not on the other. Why is that?
Also, when an action is triggered by the login page (email reports), it works everywhere, but not on other pages.
I thought C# was server-side code? Shouldn't everything work or not work based on what the server has installed?
I've been running a customer's webapplication using automatically generated email for some time, being hosted on our company's web server. Send mail was done using the System.Net.Mail API using a 3rd party SMTP server. The configuration has been done in the web.config in the system.net section, something like this:
Everything worked fine until we had to migrate to another hosting service; since then, send mail didn't work any longer with symtomatic "timeout" exceptions. We also tried using gmail and changing/omitting explicit port number specification, without any success. The server is running IIS 6 (Windows Server 2003 R2).
i am building an intranet for the company and i when a ticket is raised i want to select a person and send them that ticket. I have the gridview in place and the users email address. All i need is some simplle send mail code in c# to get it going. I am not sure on what i have to do weather i have to authenticate it and if the fact that exchange is on a sbs 2008 server called server01 and the intranet is on server02 they are both on the same domain.
We have a website which we have re-designed and coded to work using System.Net.Mail but other parts of our website use System.Web.Mail We have specified the namespaces to be used in our web.config file but as we are specifying both System.Net.Mail and System.Web.Mail and they both use MailMessage it throws an error 'MailMessage' is ambiguous, imported from the namespaces or types 'System.Web.Mail, System.Net.Mail'. Is there anyway to avoid this error and still use both namespaces?
VWD 2008 Express. Visual Basic. I use the following routine (XXXXX have replaced sensitive data) to try to send an email message to mutiple email addresses. It only sends to the first email address in the comma-delimited list. How can I send the message to multiple email addresses?
'System.Net.Mail.SmtpException: Failure sending mail. ---> System.IO.IOException: Unable to read data from the transport connection: net_io_connectionclosed. at System.Net.Mail.SmtpReplyReaderFactory.ProcessRead(Byte[] buffer, Int32 offset, Int32 read, Boolean readLine) at............................
getting the above error when sending mail from asp.net 2.0
I have account in one website..I have also given my mail address while registration..In that website there is facility to send any content of that website to friend mentioning his email address..my problem is that after sending anything how it seems to my friend that content has been sent from my mail as I have given only my email id there not my email password...even when my friend hit reply to that mail it comes to in my mail inbox..
I discussed this point here [URL] .... but did not get answer..
When sending email using MailClient, is it possible to have the .From property be for an email of a different domain than the credentials passed to the SMTP server? E.g., my credentials passed in are @mydomain.com, but the .From email is @anotherdomain.com. Or, must they be the same?
I have been given a task to write a program to automatically create a 2010 exchange mailbox. My research tells me to use powershell but I can't seem to find the namespace to reference and would like some sample code. I found some code on the web but I don't know what the namespace is for PowerShell. I think it might be System.Management.Automation but when I try to reference the namespace it does not exist in the list of dotnet. All I have is System.Management and System.Management.Instrumentation.
I want to extract emails that are currently being sent to an exchange Server. I want to extract the emails and then take some actions based on their content.
I've built several websites on my local machine and have successfully tested sending mail from within the application, but suddenly the mail won't go anywhere! I have a try-catch routine, and I'm getting the message that the mail has been sent successfully but it's not going anywhere. This is the code that I've used in a test page - the html page has a button and a textbox and nothing else. I've imported the system.net.mail namespace.
[Code]....
I'm getting the 'Email Successfully Sent' Message but I'm not receiving the email. I don't think I've changed any settings to stop the emails from going.
I'm trying to add an attachment to an e-mail which I'm sending out, but the attaching part doesn't appear to be working properly since I do not receive the attachment. Anyone know why this is occuring? No exceptions are being thrown. I am sending the
this is an extremely frustrating situation. We have just upgraded to Visual Studio 2010, and very nice it is, except for when it won't do something really simple, like Publish your ASP.NET Web Application to a folder on your desktop.For some unearthly reason, what used to work flawlessly in 2008 is now generating an error: It stops Publishing, after successfully Building, saying:Error: Copying file ImagesProfile32_32.JPG to objx64ReleasePackagePackageTmpImagesProlfile32_32.JPG failed. Could not find file 'ImagesCelebrityProfileImages32_32.JPG'.The problem is that there isn't any reference to that file in the project code (in the database, yes, but not in the code itself), and we don't want to store such images with the project (and they're not).Why (and how) has it suddenly decided that this unreferenced image (and presumably more if I get it to move past this one) is suddenly necessary to run the project? How can I stop this from happening?
I have defined two endpoints in my App.Config file as
[code]....
I received the following error when i try to launch the host
The HttpGetEnabled property of ServiceMetadataBehavior is set to true and the HttpGetUrl property is a relative address, but there is no http base address. Either supply an http base address or set HttpGetUrl to an absolute address.
