smtpclient usedefaultcredentials

The example of this article for everyone to share the implementation code of the. Net send mail, for everyone's reference, the specific contents are as follows Key code: Need to reference namespaces: Using System.Net.Mail;Using System.Net; MailMessage mailobj = new MailMessage (); Mailobj.from = new MailAddress ("mayun@qq.com"); Sender's email address mailObj.To.Add ("mahuateng@qq.com"); Recipient email address mailobj.subject = "account activation"; Them

I often use a free gmail.com mailbox because it has a large capacity, but we often encounter unexpected errors when using. NET programming to send emails. The most common is: (1) The operation has timed out.(2) A similar prompt is displayed:"The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 must issue a starttls command first ...." The main cause of this error is:(1) The pop settings are incorrect;(2) This is caused by incorrect

protected void Button1_Click (object sender, EventArgs e) {sendsmtpemail ("smtp.qq.com", "[email Nbsp;protected] "," XX password xxxx "," [emailprotected] "," 123 "," Send mail with ASP, use QQ smtp.qq.com server, Test Success "); public void Sendsmtpemail (string strsmtpserver, String strfrom, String Strfrompass, String strto, String strsub Ject, String strbody) {System.Net.Mail.SmtpClient client = new SmtpClient (strsmt

For. NET, since 2.0, e-Mail has been a very easy thing to do. Below I give a C # mass mail instance, do a more detailed note, I hope to have a friend need help.Introducing namespacesUsing system.net;Using System.Net.Mail;SmtpClient smtp = new SmtpClient (); Instantiate a SmtpClientSmtp. Deliverymethod = Smtpdeliverymethod.network; Set the outbound mode of SMTP to NetworkSmtp. Enablessl = FALSE;//SMTP Whethe

MailboxString emailpwd = configurationmanager.appsettings["Managersendmailuserpwd"]. ToString (); Login User Mailbox Passwordstring s = Gethtmlcode (Txurl.value, "gb2312");BOOL Restr = Sendmail (email, txto.value, Txtopic.value, True, S, "smtp.exmail.qq.com", email, emailpwd);if (RESTR){Clientscript.registerstartupscript (this. GetType (), "", " ");}Else{Clientscript.registerstartupscript (this. GetType (), ""," ");}}Send mailpublic bool Sendmail (string from, string to, string subject, bool is

Using system. net;Using system. net. mail; Smtpclient SMTP = new smtpclient (); // instantiate a smtpclientsmtp. deliverymethod = smtpdeliverymethod. network; // set the SMTP outbound method to networksmtp. enablessl = false; // whether SSL encryption is enabled on the SMTP server SMTP. Host = "smtp.163.com"; // specify the SMTP server address SMTP. Port = 25; // specify the SMTP server port, which is 25 by

Remember the port and SMTP server address (post: 25, URL: smtp.qq.com) Sendmail. CS 1 Using System; 2 Using System. configuration; 3 Using System. net. mail; 4 Using System. net; 5 6 Namespace Parceldistribution. BLL 7 { 8 Public Class Sendmail 9 { 10 Private Readonly Smtpclient _ SMTP; 11 Private Mailmessage _ objmailmessage; 12 Private Static Readonly String Usermai

Group emailIt is an indispensable "skill" for websites and some promotional applications ". For. net, it is very easy to send emails from 2.0. Next, I will give an example of sending an email in C # group. I have made some detailed annotations and hope to help some friends who need it. Read this blog, // introduce the namespace Using system. net;Using system. net. mail; Smtpclient SMTP = new smtpclient ();

= System. text. encoding. UTF8; // email content encoding. isBodyHtml = false; email. priority = MailPriority. high; // mail priority // instantiate an smtp client object to send an email System. net. mail. smtpClient stmp = new SmtpClient (); stmp. deliveryMethod = SmtpDeliveryMethod. network; // specify the email sending method stmp. host = mailConfigArray [0]; // sets whether authentication is required

. Equals (Webhelper.getappconfig ("smtpisusercredentials")); Smtpcredentialaccount = Webhelper.getappconfig ("Smtpcredentialaccount"); Smtpcredentialpassword = Webhelper.getappconfig ("Smtpcredentialpassword"); } } Send mail Send mail error does not throw exception public static void SendMail (string receivers, string title, string content, string sender) { if (! String.IsNullOrEmpty (receivers)) { Initialization parameters Setparameters (); if (! String.IsNullOrEmpty (SMTPHost)) {

= true; mailobj. bodyencoding = System.Text.Encoding.GetEncoding ("GB2312"); mailobj. Priority = Mailpriority.high; if (FileUpload1.PostedFile.ContentLength > 0){Mailobj. Attachments.Add (new Attachment (FileUpload1.PostedFile.FileName));}SmtpClient smtp = new SmtpClient ("smtp.163.com");Smtp. Host = "smtp.163.com";Smtp. useDefaultCredentials = false;Smtp. C

/// bcc, separated by a comma with half-width between multiple addresses /// Theme /// Body /// Attachment Address Public Static BOOLSendEmail (stringToemail,stringCcstringBccstringSubjectstringBodystringattachments) {Email email=NewEMail (Toemail, CC, BCC, subject, body, attachments); returnemail. Send (); } /// ///Send mail/// Public BOOLSend () {Type type=typeof(SmtpClient);

. Net sends emails through code, and. net code sends emails Key code: Namespace to be referenced: Using System. Net. Mail;Using System. Net; 1 MailMessage mailObj = new MailMessage (); 2 3 mailObj. from = new MailAddress ("mayun@qq.com"); // recipient email address 4 mailObj. to. add ("mahuateng@qq.com"); // recipient email address 5 mailObj. subject = "Account Activation"; // topic 6 mailObj. body = mailbody; // Body, 7 mailObj. isBodyHtml = true; // indicates that the body content is HTML 8 9

try {mailmessage mm = new MailMessage (); MailAddress Fromma = new MailAddress ("xxxx@qq.com"); MailAddress Toma = new MailAddress ("MMMMMMM@qq.com", null); Mm. from = Fromma; Recipient mm. To.add ("MMMMMM@qq.com"); Mailbox title mm. Subject = "Hello Dear:"; Mm. Isbodyhtml = true; Message content mm. Body = "Hello Mr Meteor!" "; Encoding format for content mm. bodyencoding = Sy

Direct appendix to the main code barstatic void Main (string[] args){SmtpClient client = new SmtpClient ("smtp.126.com");MailAddress from = new MailAddress ("*****@126.com", "* * *", ENCODING.UTF8);//Outgoing MailMailAddress to = new MailAddress ("* * * * * * @qq. com", "* * * *", ENCODING.UTF8);//mail addressMailMessage message = new MailMessage (from, to);Attachment atta = new Attachment (@ "C:\Users\HBD\

For. NET, since 2.0, e-Mail has been a very easy thing to do. Below I give a C # mass mail instance, do a more detailed note, I hope to have a friend need help.Introducing namespacesUsing System.Net;Using System.Net.Mail;SmtpClient smtp = new SmtpClient (); Instantiate a SmtpClientSmtp. Deliverymethod = Smtpdeliverymethod.network; Set the outbound mode of SMTP to NetworkSmtp. Enablessl = FALSE;//SMTP Whethe

1. Tools and resources used: VS2012 provides SmtpClient class (System.NET.Mail) in the. NET Frameword class Library2. Operation3, the specific code implementation is as follows:Using system;using system.collections.generic;using system.componentmodel;using system.data;using System.Drawing; Using system.linq;using system.text;using system.threading.tasks;using system.windows.forms;using System.Net.Mail; Using System.net.mime;using system.net;using Sy

1. Tools and resources used: VS2012 provides smtpclient class (System.NET.Mail) in the. NET Frameword class Library 2. Operation3, the specific code implementationusingSystem;usingSystem.Collections.Generic;usingSystem.ComponentModel;usingSystem.Data;usingSystem.Drawing;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks;usingSystem.Windows.Forms;usingSystem.Net.Mail;usingSystem.Net.Mime;usingSystem.Net;usingSystem.IO;namespaceIntelligen

Using System;Using System.Net;Using System.Net.Mail;Using System.Text;Namespace Sendmaildemo{Class Program{static void Main (string[] args){SmtpClient client = new SmtpClient ("smtp.goodix.com");MailAddress from = new MailAddress ("[Email protected]", "the Address this Mail Send from", Encoding.UTF8);Constructs a recipient Address objectMailAddress to = new MailAddress ("[Email protected]", "the Address thi

// Introduce the namespace using System. net; using System. net. mail; SmtpClient smtp = new SmtpClient (); // instantiate a SmtpClientsmtp. deliveryMethod = SmtpDeliveryMethod. network; // set the smtp outbound method to Networksmtp. enableSsl = false; // whether the smtp server enables SSL-encrypted smtp. host = "smtp.163.com"; // specify the smtp server address smtp. port = 25; // specify the smtp server