smtpclient

问题 I use asp.net's smtpClient to send email, but recently I found it can only send the email to the same domain as the smtp server, if i try to send the email out of that , it will have such error: mailbox can not be reached, ***** can not relayed**** I am sorry, i can not remember the exact message. But this never happened before, why ? thanks in advance 回答1: Do you send email through the same server outside of ASP.NET (such as with Outlook)? You likely have one of two problems: The SMTP server

问题 I wrote up a sample program by copying the code in this KB article with some little edit as far as user's info. It uses the deprecate .NET library System.Web.Mail to do it because the new System.Net.Mail does not support implicit SSL. I went and tested it with Google smtp server on port 465 which is their implicit email port and everything works. However, when I gave this to a client to test it at his network, nothing get sent/receive, here is the error: 2013-03-07 15:33:43 - The transport

问题 i have the following code below (i have stuck in xxx to not publish the real name). this code works fine when i upload to the server and will send out emails perfectly. MailMessage msg = new MailMessage(); msg.From = new MailAddress(fromEmailAddress_); msg.To.Add(new MailAddress(toEmailAddress_)); msg.Subject = subject_; msg.Body = body_; msg.IsBodyHtml = true; msg.Priority = MailPriority.High; NetworkCredential basicAuthenticationInfo = new System.Net.NetworkCredential("xxx@xxxx.org",

问题 I am trying to send and email for inside an app using system.Net.Mail.SmtpClient. When I run the code on my phone I get a java.lang.runtimeexception error and I can't figure out why? I have the following code to run send the email when I click a button. using System; using Android.App; using Android.Widget; using Android.OS; using System.Net; using System.Net.Mail; using System.Net.Mime; using System.Threading; using System.ComponentModel; namespace SendEmail { [Activity (Label = "SendEmail",

问题 I was wondering, do you really have to increase the timeout of a send operation manually for sending large attachments. I read the Microsoft documentation located here and it says the timeout length is 100 seconds. Instead of working with timeout, I was wondering if its possible to rather just tell it to continue going until either an error is found or the mail message is sent successfully? 回答1: The very page you link already gives the answer: use the SendAsync method. From the SendAsync

问题 I have gone through all the answers ... this is my situation i need C# code to send email using ibm lotus account ( have username and password) the server from which our app sends out emails is authorized no firewall stopping IBM lotus client is not installed on the server. so cannot use interop.domino.dll the SMTP service is exposed. i have ip address and port. cant telnet to it and test it becasue server does not have telnet and they will not allow us enabling it When i run the code below i

问题 I'm building a windows forms application that's supposed to run on a remote/isolated machine and send error notifications by email to the admins. I've tried employing System.Net.Mail classes to achieve this but I'm running into a strange problem: 1. I get an error message: System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by

问题 I'm trying to send an email via my C# application, but every time i try to send the email, an error occurs, saying " A call to sspi failed ", when i look at the inner exeption it says something like " The client and server cannot communicate, because they do not possess a common algorithm " My code is this: try { var fromAddress = new MailAddress("sender@domain.com", "Sender"); var toAddress = new MailAddress("receiver@domain.com", "Receiver"); const string fromPassword = "Pass123"; const

问题 I am working on a WinForm where a reportviewer is embedded. How do I send email via gmail/yahoo and attach this report as a pdf? I looked at this post http://www.codeproject.com/Articles/32109/Send-Mail-and-Print-Report-in-Report-Viewer-Contro but was not sure if it would work only with desktop email clients such as Outlook or will it support web based email client? Thanks in advance! 回答1: const string HTML_TAG_PATTERN = "<.*?>"; static string StripHTML(string inputString) { return Regex

问题 I am using the below code; One of the following points could be the reason of the error, but I don't know; 1-The application is on development machine 2-The smtp ip is hosted on the server while app is running on localhost I am getting this error "Mailbox unavailable. The server response was: 5.7.1 Unable to relay for mhtbusoum@gmail.com"; Dim message As New MailMessage message.From = New MailAddress(Strings.LCase("mhtbusoum@mysite.com")) message.To.Add("mhtbusoum@gmail.com") message