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smtp-auth

The SMTP server requires a secure connection or the client was not authenticated. if uploading on godaddy

问题 下面的代码在本地工作正常,但如果上传上传到 godaddy 则无法正常工作。 错误:显示 SMTP 服务器需要安全连接或客户端未通过身份验证。 服务器响应为:5.5.1 需要身份验证。 了解更多信息 Line 53: Line 54: smtp.EnableSsl = true; Line 55: smtp.Send(message); Line 56: Line 57: 请检查下面的代码 MailMessage message = new MailMessage(); message.From = new MailAddress(emailid.Text); message.To.Add(new MailAddress("receiver@gmail.com")); message.Subject = "NaatKhawan's Feedback"; message.Body = "Selected: " + DropDownList1.Text.ToString() + "<br/><br/>Name: " + name.Text.ToString() + " <br/><br/>Email: " + emailid.Text.ToString() + " <br/><br/>Contact Number: " + phone.Text.ToString() + "

2022-05-06 13:20:58    分类:技术分享    c#   asp.net   email   smtp-auth

The SMTP server requires a secure connection or the client was not authenticated. if uploading on godaddy

below code is working fine in local, but if upload upload it on godaddy it is not working. Error: showing The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required. Learn more at Line 53: Line 54: smtp.EnableSsl = true; Line 55: smtp.Send(message); Line 56: Line 57: plz check below code MailMessage message = new MailMessage(); message.From = new MailAddress(emailid.Text); message.To.Add(new MailAddress("receiver@gmail.com")); message.Subject = "NaatKhawan's Feedback"; message.Body = "Selected: " + DropDownList1.Text

2022-04-27 00:34:36    分类:问答    c#   asp.net   email   smtp-auth

为什么电子邮件客户端需要 SMTP 中继服务器? 那有必要吗?(Why email client need a SMTP relay server? Is that neccessary?)

问题 When setting-up my mobile email client, I usually need to enter the SMTP relay server domain name, but why my email client need a SMTP relay server at all? I think it can directly talk to the smtpd server (e.g. postfix) from which domain the destination Email address is, by looking up the DNS MX records. And send directly to it, why not? Actually I have another confusion, if a smtpd server use SMTP AUTH, then how can a rely server elsewhere rely a mail to it? The rely server simply don't have the username and password necessary to transfer that mail. 回答1

2022-04-16 20:23:08    分类:技术分享    email   smtp   postfix-mta   smtp-auth   smtpd

Why email client need a SMTP relay server? Is that neccessary?

When setting-up my mobile email client, I usually need to enter the SMTP relay server domain name, but why my email client need a SMTP relay server at all? I think it can directly talk to the smtpd server (e.g. postfix) from which domain the destination Email address is, by looking up the DNS MX records. And send directly to it, why not? Actually I have another confusion, if a smtpd server use SMTP AUTH, then how can a rely server elsewhere rely a mail to it? The rely server simply don't have the username and password necessary to transfer that mail.

2022-04-04 03:49:10    分类:问答    email   smtp   postfix-mta   smtp-auth   smtpd

MailKit unsuccessful SMTP OAuth with Microsoft 365 server

I'm using MailKit 2.6.0.0 to connect to Microsoft 365 using OAuth for authentication with POP3, IMAP, and SMTP. The ImapClient and Pop3Client authenticate successfully but the SmtpClient does not. Here's the protocol log from MailKit: Connected to smtp://smtp.office365.com:587/?starttls=always S: 220 MN2PR04CA0011.outlook.office365.com Microsoft ESMTP MAIL Service ready at Sat, 30 May 2020 07:48:32 +0000 C: EHLO [192.168.1.240] S: 250-MN2PR04CA0011.outlook.office365.com Hello [my-ip] S: 250-SIZE 157286400 S: 250-PIPELINING S: 250-DSN S: 250-ENHANCEDSTATUSCODES S: 250-STARTTLS S: 250-8BITMIME S

2022-03-23 04:26:02    分类:问答    office365   mailkit   smtp-auth

Perl TLS SMTP send failing on authentication step

I am trying to send mail using authenticated SMTP via Perl on a Debian buster server. Here is my code: use strict ; use warnings ; use autodie ; use Net::SMTP; # version 3.11 use Authen::SASL; my $smtp_server = 'smtp.example.com' ; my $principal = 'myusername' ; print "Password: "; my $password = <STDIN>; chomp($password); my $from = 'joeuser@example.com' ; my $to = 'joeuser@example.com' ; my $subject = 'Test message' ; my $body = "The body of the e-mail message."; my $mailer = Net::SMTP->new($smtp_server, 'SSL' => 1, 'Port' => 465, 'Debug' => 1); if (!$mailer) { die $@ ; } if (!$mailer->auth(

2022-03-17 10:32:45    分类:问答    perl   smtp   smtp-auth

com.sun.mail.smtp.SMTPSendFailedException:530-5.5.1 需要身份验证(com.sun.mail.smtp.SMTPSendFailedException: 530-5.5.1 Authentication Required)

问题 我正在尝试从我的 Java 应用程序向任何特定的电子邮件地址发送电子邮件。 我正在使用 Java Mail API,但不幸的是我收到了 SMTPSendFailedException 错误。 任何人都可以告诉我我在哪里做错了。 这是我的代码 import java.util.*; import javax.mail.*; import javax.mail.internet.*; import javax.activation.*; //import SeconMail.Authenticator; public class SendMail { public static void main(String [] args) { // Recipient's email ID needs to be mentioned. String to = "to@gmail.com"; // Sender's email ID needs to be mentioned String from = "from@expertflow.com"; // Assuming you are sending email from localhost String host = "smtp.gmail.com"; // Get system properties Properties

2022-01-12 11:40:36    分类:技术分享    java   exception   jakarta-mail   smtp-auth

无法连接到 SMTP 端口号 465(Unable to connect to SMTP Port no 465)

问题 我无法连接到使用 SSL 身份验证的 smtp 端口号 465。 早些时候,它曾经在默认端口 25 中工作,但已将所有外发电子邮件的出站电子邮件设置更改为指向 465。 当我使用 Outlook 时,这工作得很好,但显示它无法连接到端口 465。 下面是错误。 javax.mail.SendFailedException: Sending failed; nested exception is: javax.mail.MessagingException: Could not connect to SMTP host: smtp.bizmail.yahoo.com, port: 465 at javax.mail.Transport.send0(Transport.java:218) at javax.mail.Transport.send(Transport.java:80) 下面是我使用的 Javax Mail 设置。 Properties props = System.getProperties(); props.put("mail.smtp.host", host); props.put("mail.smtp.socketFactory.class", props.setProperty("mail.smtp.port", "465"); props.put(

2022-01-12 11:37:18    分类:技术分享    java   email   smtp   html-email   smtp-auth

Unable to connect to SMTP Port no 465

I am not able to connect to smtp port no 465, which uses SSL authentication. Earlier it used to work in default port 25, but have changed the setting to point to 465 for outbound emails for all outgoing emails. This works perfectly fine when i use outlook but shows that it cannot connect to port 465. Below is the error. javax.mail.SendFailedException: Sending failed; nested exception is: javax.mail.MessagingException: Could not connect to SMTP host: smtp.bizmail.yahoo.com, port: 465 at javax.mail.Transport.send0(Transport.java:218) at javax.mail.Transport.send(Transport.java:80) And below is

2022-01-12 07:50:25    分类:问答    java   email   smtp   html-email   smtp-auth