What are SMTP codes?

What are SMTP codes?

An SMTP response code consists of three digits:

• The error code class: This first digit indicates whether or not the server accepted the command.
• Subject: The second digit in the SMTP response code gives you more information, stating whether there was a syntactic problem, connection trouble, or something else.

What does SMTP code 250 mean?

everything went well
250 – This SMTP server response simply means everything went well and your message was delivered to the recipient server. 421 – Your message was temporarily deferred by the recipient server. This is usually a result of too many connections in a short timeframe or too many messages.

What is SMTP and example?

SMTP stands for Simple Mail Transfer Protocol, and it’s an application used by mail servers to send, receive, and/or relay outgoing mail between email senders and receivers. For example, Gmail’s SMTP server host address is smtp.gmail.com, and Twilio SendGrid’s is smtp.sendgrid.com.

What is the meaning of 221 response code in SMTP?

Error 221 is an authentication error, which means you are using the wrong mail server, the user/password is incorrect, you need to change the authentication method or SMTP access is not enabled for your email account. Try using SSL/TLS if you are sure that the mail server and user/password is correct.

How do I find SMTP error?

Fix SMTP Server error in Email

1. Open your email client program (Outlook Express, Outlook, Eudora or Windows Mail)
2. Click “Accounts” in the “Tools” menu.
3. Click on your email account then click “Properties” button.
4. Click “General” tab.
5. Ensure that the “E-mail address” is your valid address for this account.
6. Click “Servers” tab.

How do I read SMTP logs?

Open Start > Programs > Administrative Tools > Internet Information Service (IIS) Manager. Right click “Default SMTP Virtual Server” and choose “Properties”. Check “Enable logging”. You can check the SMTP log files at C:\WINDOWS\system32\LogFiles\SMTPSVC1.

How do I fix SMTP Error 421?

How to Fix Error 421 Cannot Connect to SMTP Server?

1. Send/Receive Groups window.
2. Changing port numbers in Internet Email Settings window.
3. Enabling “Use the same settings as my incoming mail server” option.
4. Recreating Outlook account.
5. Turning Off Firewall in Windows Settings.
6. PST selection window in Stellar Repair for Outlook.

How do I find my SMTP error?

To verify your existing SMTP server settings:

1. Open your email client program (Outlook Express, Outlook, Eudora or Windows Mail)
2. Click “Accounts” in the “Tools” menu.
3. Click on your email account then click “Properties” button.
4. Click “General” tab.
5. Ensure that the “E-mail address” is your valid address for this account.