Smtp command line Open a command prompt and use Telnet to connect to the remote email server on port 25. This makes it particularly useful for headless servers or cloud platforms without a full mail server installation. smtp. It specifies the originator of the mail. e. HELO It’s the first SMTP command: is starts the conversation identifying the sender server and is generally followed by its domain name. As its man page suggests, it's a minimalistic emulator of sendmail. smtp-cli is a powerful SMTP command line client with a support for advanced features, such as STARTTLS, SMTP-AUTH, or IPv6 and with a scriptable message composition capabilities supporting anything from simple plain-text messages right up to building complex HTML emails with alternative plain-text part, attachments and inline images. We need to open Windows command prompt: How to open Windows command prompt in Windows? Open the Start Menu and type cmd in Search input. Sending emails from the command line in Windows requires the use of a built-in tool called "Send-MailMessage. Also verify your recipient addresses are valid. It provides the identification of the sender i. These tables include the actual commands used by email clients. Also read : How to configure SMTP in Linux; How to configure SMTP in HPUX Mar 17, 2025 · SMTP commands are essential tools for managing email communication between servers. Put the /v (verbose) switch on to see loads of useful information on your screen. 110 – to test POP3 connectivity 143 – to test IMAP connectivity 25 – to test SMTP connectivity (use port 525 to skip the 20-second connection delay) Testing POP3 or IMAP SMTP Mailer. Swaks command. The details for this are below; 1. Type set q=mx. com 25. mydomain. 本文列出了所有基本的 smtp 命令。它还定义了它们，提供了简短的解释，并为列出的每个命令提供了说明。 基本 smtp 命令及其在 smtp 会话中的应用方式. Escape character is '^]'. why terminal mail doesn't work? 0. I am unable to figure out whats going wrong SMTP-CLI is an SMTP command line client that supports STARTTLS, SMTP-AUTH, and several other sophisticated features. The SMTP client should send HELO or EHLO to start the session after receiving response 220 from the server. com 25 Sep 24, 2019 · This is an SMTP command line client. It also supports multiple attachemnts and server authentication. In the steps that follow, we will use Telnet to test the email server. STARTTLS. See the steps for basic authentication, TLS/SSL encryption, and Office 365 authentication. Oct 4, 2009 · I just wanted to simulate the SMTP connection on my Windows XP command line, and when I telnet smtp. com. The SMTP communication example below shows how AUTH LOGIN can be used to make an authenticated login to an server: Dec 27, 2023 · Given SMTP‘s indispensability for email, taking time to build more advanced familiarity with how it enables transmission is valuable knowledge. As such, SSMTP allows users to transfer emails through an SMTP server from the Linux command line. There is an example script on the PowerShell Community Script Repository. txt Dec 17, 2024 · There would be no visible output on the terminal upon successful email sending, but the recipient will get an email from ‘from@example. Feb 2, 2013 · HowToGeek demonstrates a Windows PowerShell script that works very well at How To Send Email From the Command Line in Windows Without Extra Software. Conclusion: Using msmtp is a straightforward method to send emails via an SMTP server from the command line. Step 4 – Replace PORT with. To install mailutils in Debian and Ubuntu Systems, run: Mar 1, 2011 · Can anyone help me out, we need to send mail through command line from Window server. In this tutorial, we emphasize the importance of checking SMTP functionality from the command line in Linux when setting up an email server. Depending on the email account you will be using to send the email, the SMTP server will differ for each company or identity. com) or the IP address of the SMTP server. Locate the Start Search box, type cmd, and hit Enter. Mail is installed as part of mailutils and mailx packages on Debian and Redhat systems respectively. Aug 8, 2019 · Subject: Terminal Email Send Email Content line 1 Email Content line 2 Now send email using the following command: $ sendmail [email protected] < /tem/email. Also, you can use this powerful tool for testing and debugging SMTP servers. io 2525. Apr 11, 2018 · Sending Email Using the SSMTP Command. Unless you want to talk to an SMTP server directly via telnet you'd use commandline mailers like blat: blat -to [email protected] -f [email protected] -s "mail subject" ^ -server smtp. 6. To connect to the SMTP server, open a terminal and run the following command: telnet mail. You can specify the sender and multiple recipients including CC and BCC. Le protocole SMTP (Simple Mail Transfer Protocol) ASCII est fourni avec un ensemble de commandes et de codes de réponse. Net System. THE SMTP MODEL The SMTP design is based on the following model of communication: as the result of a user mail request, the sender-SMTP establishes a two-way transmission channel to a receiver-SMTP. 2. example mail from:<[email protected]> rcpt to:<[email protected]> data From: [email protected] Subject: test mail from command line this is test number 1 sent from linux box . mailtrap. Sendmail is a general-purpose internetwork email routing facility that supports many kinds of mail-transfer and delivery methods, including the Simple Mail Transfer Protocol (SMTP) used for email transport over the Internet. Additionally, we put our credentials in the field user and password. MAIL FROM With this SMTP command the operations begin: the sender states the source email address in the “From” field and actually starts the email transfer. Jul 28, 2022 · I'm trying to send an email from the command line but it does not work: echo "Hello World" | mail -s "Test email" [email protected] Years ago "it just worked" because mail would (apparently) use an smtp server from Mail. If you don't know the FQDN or IP address, you can use the Nslookup command-line tool to find the MX record for the destination domain. com >ping mail. 5. Tell the server you want to authenticate with it: AUTH LOGIN Jul 20, 2020 · 9 mail/mailx command examples to send emails from command line on Linux. Optional Read Step 3 – Enter the following command, replacing SERVERNAME either with your domain name, or your Home Server name. In this article, we’ll show you how to send emails from the Windows command line with PowerShell, streamlining your email communication and improving your productivity. Mar 18, 2024 · Firstly, the account specifies the name to identify a particular SMTP server configuration. These servers allow you to access the email account from which the email will be sent. Using the command line to send email using the Amazon SES SMTP interface. and that will be your smtp server *) The AUTH PLAIN command and the username and the password are sent to the server in one single line. Type nslookup. Mail class to send e-mail messages). 1 Connected to localhost. Sep 20, 2019 · Here’s how you use sSMTP to send emails from your Linux command line: sSMTP is a lightweight utility that allows users to send emails from the command line or shell scripts. io on port number 2525. Let’s use telnet to check if an SMTP server is running on port 2525: $ telnet localhost 2525 Trying 127. It is not intended to be used for sending large volumes of emails, but is designed to help as a SMTP stands for Simple Mail Transfer Protocol. Using Telnet. “25” is the default SMTP port. 220 a42502410059 smtp4dev ready Mar 17, 2024 · You can use the built-in Send-MailMessage cmdlet to send SMTP e-mails from PowerShell (previously you can use the . 通常，smtp 命令定义 smtp 会话期间的特定功能。 stmp 会话由三个步骤组成，包括握手、电子邮件传输和终止阶段。 Dec 31, 2013 · 本文演示用命令行发送邮件的过程。SMTP首先介绍下smtp协议——简单邮件传输协议 (Simple Mail Transfer Protocol, SMTP) 是事实上的在Internet传输email的标准。 SMTP使用命令在客户端和服务器之间传输报文，即客户端发出一个命令，服务器返回一个应答。 Dec 27, 2024 · If you’re successful connecting to the SMTP server your command prompt window will look something like this (this is also a good test to verify connectivity for any port on other devices): If you get a “ Could not open connection to the host, on port 25: Connect failed” you’re probably trying to go through a firewall and port 25 is From a telnet prompt, type the following commands: openssl s_client -starttls smtp -crlf -connect smtp. SMTP Mailer. To send an email through the command line using Telnet, follow these steps: 1. telnet smtp. com (PowerMTA(TM) v4. A great way to verify an email server is to manually execute the SMTP and POP3 commands directly from the command line by typing in the following: telnet . Its command line and will do a VERY thorough check of the smtp communication between 2 servers. It specifies the recipient of mail. Mar 25, 2025 · We can use the telnet command to check an SMTP connection. quit Note : Do not forgot the ". If you have the need to send email from a command line, this free program is perfect: simple to use and feature rich. Nov 14, 2024 · Type cmd in the Start menu search field and select Command Prompt from the results. To effectively identify and troubleshoot SMTP connection issues, developers commonly rely on Telnet. EHLO If PowerShell is available, the Send-MailMessage commandlet is a single one-line command that could easily be called from a batch file to handle email notifications. If you get SMTP auth errors, double check your SMTP username and password are correct in ssmtp. SMTP and POP3 are the components used to send and receive email. There is a core list of SMTP commands that all SMTP servers supports and these are referred to as basic SMTP commands in this document. Prerequisites Jan 3, 2024 · Step 1: Ping SMTP server to verify server connectivity. 1. This sets a filter to only collect MX records and related information. example 25 And copy and paste the below. For each attempt, the cmdlet returns the following information: Server: The name of the server that hosts the Receive connector. Étant donné que les sessions SMTP sont des conversations entre les clients SMTP et les serveurs SMTP, les commandes SMTP sont souvent envoyées de la machine cliente au périphérique serveur. telnet SERVERNAME PORT. Mar 1, 2016 · git send-email --smtp-pass your-Oauth2-app-pwd will not help the OP do scripting because your-Oauth2-app-pwd is something that must be generated. Actually I just noticed that localhost:25 is the default:-s SERVER[:PORT] smtp mail relay, default is localhost:25 Dec 8, 2014 · Send mail from command line with external smtp server on Linux Linux Commands; Curl command examples in Linux - Make HTTP requests from the command line Linux Commands; Wget Command Examples in Linux - Download files from command line Linux Commands; How to check if ISO is bootable in Linux - From Command Line Linux Commands; Take webpage Jul 13, 2023 · Below are the various, well known methods of sending email with attachment from the terminal. How to open Windows command prompt in older Windows mailsend is a simple SMTP command-line tool for Windows and Linux. com open command prompt try to run following two commands >ping smtp. Mar 19, 2024 · The AUTH command is an ESMTP command that authenticates the SMTP client to the SMTP server. You can find your email service provider's SMTP Aug 10, 2011 · Sending Email from the Command Line via Telnet. Apr 10, 2020 · If you are looking to do this from a Windows command line, there is a tool called blat that can be used from a CMD prompt. yourdomain. I was able to do that using smtp4dev. In this article, we have described how to install sendemail package and a few examples for sending email through remote SMTP servers like Gmail. Jan 4, 2017 · What will be returned from each command is a base64 encoding of the username and password; save these as you will need them later. Type <domain_name>. Jan 25, 2024 · Installation using the command line . Type QUIT to exit Telnet. It’s free from Microsoft. See everything curl - Sending email and Using curl to send email:. Open the Command Prompt To start, open the Command Prompt by clicking on the Start menu and typing “cmd” in the search bar. smtp-cli supports STARTTLS, SMTP-AUTH, and many other advanced features. Once the Command Prompt app appears, click on it to launch the application. com or msn. Mar 14, 2012 · SMTP是Simple Mail Transfer Protocol的简写。 邮件是日常工作、生活中不能缺少的一个工具，下面是邮件收发的流程。 邮件的发送，主要是通过SMTP协议来实现的。SMTP协议最早在RFC 821（1982年）中定义，最后更新是在RFC 5321（2008年）中，更新中包含了 Step 2: Connect to SMTP server. Command Line SMTP is a Windows command line SMTP client enabling quick & simple communication with an SMTP server from the command line. office365. helo client. Nov 21, 2015 · Open Windows Command Prompt using Start > Command Prompt or via Run > CMD; Telnet to the mail server by typing telnet <domain> 25 ; Once connected, we must initiate the mail sending process queue. It closes the TCP connection. RCPT TO Oct 18, 2021 · There are several ways to do this, on this tutorial we will use SMTP servers. 220 mail. Mar 14, 2024 · To initiate an SMTP connection with a server via Telnet, use a command specifying the server’s address (domain name or IP address) and the port it listens on. com port#, for example openssl s_client -starttls smtp -crlf -connect smtp. You should see a response like `220 smtp. Step 3: Sending an e-mail from the command line. Sending email using unix shell scripting. Open a command prompt and connect to the SMTP host using telnet: telnet smtp. Step 4: Authenticate Yourself with the Jul 26, 2016 · Escape character is '^]'. example. Dec 26, 2018 · Test the SMTP Service. 0. net -body "message text" See full list on mailtrap. Il fonctionne sur une interface client-serveur et utilise le port TCP 25. As such, Blat sends eMail via SMTP (or internet eMail) from the command line, or CGI, smtp-cli — command line SMTP client. I found a little tool years ago that I swear by. It’s like the Swiss Army knife for your digital correspondence - simple enough for quick interactions but powerful enough for scripting and automation. For example msmtprc contains a line passwordeval oama access [email protected] where oama is an oauth2 tool that makes use of GPG. railsware. com; you will most probably get response from any one from the above two commands. org ’, routed through the specified SMTP server. The GitHub releases page has links to the most recent version of SMTP-CLI. oama could probably be used in your git example if executed from the command line. smtp-cli is a powerful SMTP command line client with a support for advanced features, such as STARTTLS, SMTP-AUTH, or IPv6 In addition to being a full-featured client, its --verbose option makes it the tool I think you're looking for to track down SMTP issues (like, for instance, why a server is rejecting a given to: address, which is how I Some SMTP servers may handle extended SMTP commands. May 17, 2014 · In this post you'll learn how to test SMTP authentication with StartTLS from the command-prompt. It's a test email" | mailx -v -s "Test Mail" <recipient> Replace the recipient with actual email id. " at the end which Jan 8, 2024 · From: [email protected] Subject: This is the Subject Line Email content line 1 Email content line 2 Then send an email to “ [email protected] ” using the `ssmtp` command: ssmtp [email protected] msg. Follow these instructions to use the ‘sendmail’ command: Apr 4, 2022 · SMTP connection errors can be resolved in a variety of ways, but command line can detect them directly. Try Teams for free Explore Teams curl. For educational purposes, I need to send an email through an SMTP server, using SMTP's fundamental and simple rules. Its called SMTPDiag. Use mailx (or mail) command to send a test email and check the client debug logs: # echo "Ignore. Swaks (Swiss Army Knife for SMTP) is a versatile, scriptable tool used for testing and debugging SMTP servers and sending emails from the command line. Outgoing email (SMTP) uses port #25 Dec 26, 2016 · We have seen how to configure SMTP in Linux, in this post we will see different examples to send a mail through terminal. A blank command window with title Telnet smtp. They help establish the connection and set parameters for email transmission. com 25 Replace “mail. In our case, we run a local SMTP server. You can also use the command line to send messages using the Amazon SES SMTP interface. Sep 13, 2021 · There are 14 different SMTP commands which are given in the following table : 1. generally smtp servers name are smtp. [Then click OK] 2. curl supports sending data to an SMTP server, which combined with the right set of command line options makes an email get sent to a set of receivers of your choice. Send-MailMessage allows you to send… Aug 19, 2019 · The command line is a powerful tool for detecting and resolving SMTP connection errors. It is a good alternative to telnet because smtp-cli allows you to check the encryption settings of the TLS-enabled server with a subsequent user authentication. Oct 30, 2023 · There are a few common problems that may arise when attempting to send email from the Linux command line: SMTP Authentication Failures. 0) ESMTP service ready The first command to issue to the mail server is going to be EHLO or HELO, which is a basic greeting that initiates the communication between the SMTP server and the telnet client. As the first SMTP connectivity test, let us try using ping command. Sep 29, 2023 · With all that hopefully cleared up, let's move to sending e-mails from the command line. Use -a for mailx and -A for mailutils. The SMTP protocol is restarted with STARTTLS. Mail to send email. It is a bit more fun from PowerShell. Net Framework, you can easily create and send an e-mail from the command line. If Telnet is able to connect to the remote server you should see its welcome banner. However, most service providers refrain from offering this SMTP command due to the risks of email enumeration. Using Windows (2008) is there an easy command line tool that I can use to send a test email from a server to test the SMTP, user authentication, ports, etc without writing my own? Here is a step-by-step guide on how to send emails from the command line in Windows: 1. 4. The MIME Jan 1, 2024 · Sending emails is an essential task in today’s digital age, and as a system administrator, you may need to send emails from the command line to automate this task. Oct 14, 2019 · Method 2: Use sendmail command. This command attempts to connect to the SMTP server at sandbox. com” with the hostname or IP address of the SMTP server. As an alternative, you can download a widget and install it using the proper command using a download utility: The parameters in question are: SMTP Server, SMTP Server port, whether it uses SSL/TLS, login username and password. The TLS handshake for a secure SMTP session is initiated with the STARTTLS command. The host and port for any public SMTP services are easily obtainable with a quick search online. Mar 12, 2024 · Learn how to use telnet or OpenSSL to connect to a remote SMTP server and send a test e-mail with authentication. From the Windows Start Menu select Start->Run and enter CMD as the application to run. Greet the mail server: EHLO mailserver. Using ‘sendmail’ Command. To test the SMTP service, follow these steps: On a client computer running Windows Server or Windows 10 (with telnet client installed), type Telnet at a command prompt, and then press ENTER. It supports a wide range of SMTP features, including TLS and various authentication methods. contoso. We have our own Mail exchange server we can make use of it. Here is the method: First you're defining the variables: CMail is a nifty freeware application that lets you send e‑mails from the Windows command line using SMTP. txt To send using implicit SSL over port 465 – Enter the following command: openssl s_client -crlf -quiet -connect smtp-server-endpoint:465 < input. At the command prompt enter telnet <mail server address> 25; Check the response. The good stuff shows up in green, bad stuff in red. The next step is to dial in a specific command in the command line. Aug 3, 2022 · Linux mail command is quite popular and is commonly used to send emails from the command line. yourserver. It can take different keywords, depending on the level of security and the login method: PLAIN , LOGIN , and CRAM-MD5 . AUTH LOGIN The LOGIN mechanism is another common method to login to an SMTP server. In debugging email problems, a goo Jun 24, 2021 · SendEmail is a Lightweight command line SMTP email client for sending emails through the SMTP server. Thanks in advance. We cannot use Blat as per security issue and neither do we want to install Exchange resource kit. On Ubuntu, there are several command line utilities that you can use to send an e-mail. Sending Email From PowerShell Jan 16, 2024 · The VRFY command is used to confirm the existence of an email address on the receiving server. That way, you’ll have the right to complete the installation. So telnet to your SMTP server like. The two commands process messages on the command line. May be if any batch which could be run to access our SMTP mail server. Substitute the address of your mail server in the above command where it says <mail server address> – don’t leave the angle brackets in (<>). ReceiveConnector: The name of the Receive connector to which the SMTP The Send-MailMessage cmdlet sends an email message from within PowerShell. conf. You're going to have to base64 encode the attachment and create the MIME headers. app and send the email. Since PowerShell has access to the . We start this with helo <domain> The server will reply with 250 and a hello if successful. com or mail. Jan 24, 2024 · Open a command prompt. You must specify a Simple Mail Transfer Protocol (SMTP) server or the Send-MailMessage command fails. To find what the MX record is for a domain, use the NSLOOKUP command. It supports TLS as well. This post will elaborate on how to attach a file to mail, how to add a subject line, how to add body content to mail-in command-line interface. A critical part of setting up an email server is making sure SMTP works from the command line (Linux). Right-click on the Command Prompt and press Run as administrator. For instance: telnet sandbox. the host name. exe. . Nov 12, 2019 · When using the telnet command the server MX record must be used. C:\>telnet esp-ho-ex2010a 25. When sending SMTP with curl, there are two necessary command line options that must be used. Let's take a look at a few of these command line utilities. Using mail Command. com:587 and then press "Enter". Here is a short example of how to use the SMTP Mailer. Blat is a small, efficent SMTP command line mailer for Windows. com ESMTP`. While it lacks a GUI or encryption features, it provides a useful -info option to display SMTP server details. Nov 24, 2011 · You will need to set SMTP up: How do I Send Email from the Command Line? 9. com opens with cursor. The Apr 1, 2016 · Ask questions, find answers and collaborate at work with Stack Overflow for Teams. An output like the following is displayed: Jan 9, 2021 · These are some SMTP commands: Each command is used in a normal communication sequence between two servers through the SMTP protocol, in order to deliver emails. Oct 18, 2023 · To connect to an SMTP server by using Telnet on port 25, you need to use the fully qualified domain name (FQDN) (for example, mail. Net. This product makes it extremely simple to send an email from a command line. Click on cmd. Installation. Send an email from a command line. For instance, the SMTP server of Gmail is smtp. At the telnet prompt, type set LocalEcho, press ENTER, and then type open <machinename> 25, and then press ENTER. To start or stop SMTP using the command line, follow these steps: Open a Command Prompt. where <domain_name> is the domain that you want to obtain the DNS records for, for example, microsoft. Now we must set the sending mail address. All basic SMTP commands that are specified by the SMTP protocol are described below. This can be done from the Start menu -> All Programs-> Accessories-> Command Prompt; Within the Command Prompt, enter the Feb 16, 2024 · How to Test SMTP with Telnet? To initiate an SMTP connection with a server via Telnet, use a command specifying the server’s address (domain name or IP address) and the port it listens on. " Send-MailMessage is a cmdlet available in Windows PowerShell, a powerful scripting language that can be used to automate tasks in Windows. After completing the installation, use the below command to send a test email from your command line: echo "My message" | mail -s subject [email protected] Using echo with pipe avoids unnecessary prompts or confirmation from getting displayed, and -s denotes the mail’s subject. Establish a Mail Server Connection Oct 17, 2008 · Very useful stuff. Rather than generating a new message "on the fly" each time, it would probably be easier just to email yourself a very short example message from a "real" email program (leveraging the work that the people who wrote it did to put the attachment into the proper encoding and creating the MIME headers). This is a nice little tool we just configured for mail delivery. io Dec 19, 2024 · How to Send Email From the Command Line in Windows. Ick. exe in the list. Setting up SMTP: These commands are crucial for configuring SMTP on your computer or network. When I type in EHLO or usual SMTP handshake commands, the prompt just closes. The StartTLS command is used by both SMTP and IMAP (POP3 uses a different STLS command for encryption). com at 465 port - I don't see any thing. To perform an SMTP test command, we need to connect to the SMTP server using telnet. Now connect to the mail server using Telnet: telnet mailserver. txt Impatient SMTP servers Nov 3, 2016 · In Windows there is no way to natively send mail from the Command Prompt, but because PowerShell allows you to use the underlying . Type `telnet {SMTP server address} {Port number}` in the Command Prompt and press Enter. This procedure is useful for testing SMTP credentials and for testing the ability of specific recipients to receive messages that you send by using Amazon SES. Nov 12, 2010 · openssl s_client -crlf -quiet -starttls smtp -connect smtp-server-endpoint:587 < input. Then, we’ll specify the host and port for the SMTP servers. It specifies the beginning of the mail. SendEmail is a lightweight, command line SMTP email client. Command Line SMTP can be called directly from the command prompt or from within a batch file allowing multiple separate emails to be sent easily. They play a key role in various technical scenarios. Telnet is typically used to test SMTP connection failures. gmail. Sendmail, a widely used SMTP server in Linux/Unix systems, allows email sending via the command line. Neat, right?! :) Most SMTP and mail sending problems come from the fact that either the username and password combination is incorrect, the mail server doesn't support StartTLS, or the authentication mechanism used is wrong. When you run the Test-SmtpConnectivity cmdlet against a Mailbox server, the cmdlet attempts to establish an SMTP connection to all bindings of all Receive connectors hosted on that server. You can manually check the StartTLS protocol support on the remote SMTP server. It was designed to be used in bash scripts, batch files, Perl programs and web sites, but is quite adaptable and will likely meet your requirements. The connection will be established if your SMTP server settings are correct. The macOS included curl can be used to send an e-mail. Oct 17, 2019 · Quick Sendmail Test from the Linux command line. Swaks (Swiss army knife for SMTP) is a simple command line tool that can be used to test smtp servers to check if they are doing they job properly. txt Using mail command $ mail -s "Test Subject" [email protected] < /dev/null Also, you can send an attachment with this command. I telnet localhost 25 and and commands are: An alternative command to start the conversation, underlying that the server is using the Extended SMTP protocol. Press the Windows key or click the Start button. From here, you will be able to select the appropriate service state, turning SMTP on or off as needed; Using the Command Line. Below is a sample of the line you would include in your batch file to call the PowerShell script (the %xVariable% is a variable you might want to pass from your batch file to the PowerShell script): Blat is a small, efficent SMTP command line mailer for Windows. As such, Blat sends eMail via SMTP (or internet eMail) from the command line, or CGI, Mar 20, 2017 · From the command line, I like to use "sendemail", which on ubuntu / debian can be installed from the command line like so: apt-get install sendemail Then you can simply tell it to use localhost (Postfix) as the MTA. mail is part of the mailutils (On Debian) and mailx (On RedHat) package and it is used to process messages on the command line. Note: I have uploaded a sample over here, due to many requests. Gmail command example: SMTP Commands Reference A client computer communicates with an SMTP server (e-mail server) by using SMTP commands. Therefore, our domain name is localhost. At the command prompt, enter the following: nslookup [enter] >set type=mx Jan 12, 2024 · 1. curl --ssl-reqd \ --url 'smtps://smtp August 1982 RFC 821 Simple Mail Transfer Protocol 2. It is the SMTP *sending* part of an eMail User Agent (MUA) or eMail client. This command is particularly important for validating that a recipient's email address is legitimate and capable of receiving emails. 3. This comprehensive reference guide aims to demystify core SMTP concepts by providing extensive detail and commentary on SMTP commands and response codes which enact message sending. NET Framework, you can use the classes from System. yksqv mee holgnd jkzb iiptn jfijxk juama hhymxa rcptw fvmkkd rgfe spheamuu ukwo otmgw iuhvy