esmtp

Using system. net. Mail. smtpclient under. NET Framework can easily send emails, but many email servers now support ESMTP protocol. The biggest difference between ESMTP and ESMTP is that the account and password must be provided for verification

In order to restrict non-official users from using the email server to distribute spam or conduct other improper behaviors, various free/paid email providers in China have successively upgraded to ESMTP and opened security authentication services.

Introduction to SMTP commands and ESMTP Processes What is SMTP SMTP (Simple Mail Transfer Protocol): the transmission protocol used to transmit an email from a client to a server or from one server to another. SMTP is a request/response protocol.

Friends who have used the C # built-in SMTP class probably know that when using it to send emails, sometimes there are always inexplicable errors, sometimes it can be sent successfully, sometimes it is said that the user account verification fails,

smtp| Source Code //============================================================File:MailSender.csMail Send componentSupport ESMTP, multiple attachments//============================================================ Namespace Jcpersonal.utility{Using

When ESMTP/SMTP is used for mail sending, a problem occurs:If the attachment is an image gif file, there is no problem with sending it. However, after receiving the message, the image cannot be displayed. Please kindly advise !!!!!/** Created on 2004

SMTP/ESMTP/POP3 command SMTP command:Helo FQDN identifies the sending SMTP hostMail from: Identify the mail senderRcpt to: Identify Email Recipient InformationData indicates that the sending host email data is ready for sending.Rset

I believe that people like me, in the daily life to collect spam is a fixed job? How do you track spammers when you receive junk mail? Many friends will not hesitate to say, of course, find the sender's IP. In fact, there are two main forms of

Address: http://blog.csdn.net/njhwwgc/article/details/5719602   The procedure is as follows:1. Is Sendmail software installed using the RPM command?Suining :~ # Rpm-Qa | grep sendmailSendmail-devel-8.12.10-162.1Sendmail-8.12.10-162.1Suining :~ #If

-- Sendmail MUa (Mail User Agent), which is used to send or read emails from the client. The tool mutt is available in Linux. MTA (Mail tranfer agent) is equivalent to a post office and server-side software. It provides the following functions: