How Do I Troubleshoot SMTP Problems?

How do I test my SMTP connection?

In this articleWhat do you need to know before you begin?Step 1: Install the Telnet Client on your computer.Step 2: Find the FQDN or IP address of the destination SMTP server.Step 3: Use Telnet on Port 25 to test SMTP communication.Step 4: Success and error messages in the Telnet Session..

What is my SMTP server?

Click “Tools,” then “Accounts,” then “Mail” if you are using the popular Outlook Express program for your email. Select the “Default” account, and choose “Properties” from the menu. Choose the “Server” tab and choose “Outgoing Mail.” This is the name of your SMTP server.

How do I stop mail delivery failed returning to sender?

Resolving Mail delivery failed: returning message to sender bounce-backsCheck the spelling of the email address for typos.Check that the person gave you the correct email address.Remove special characters from To or Subject field.Create the email account that is receiving/sending mail (if you host it)More items…•

Can receive but not send emails on iPhone?

If you can’t send email try the following: On your iPhone or iPod Touch screen tap Settings and then Mail, Contacts, Calendars. Select your email account from the list, and then select it again on the next screen. Scroll down to the bottom and tap on the SMTP field under Outgoing Mail Server.

How do I troubleshoot email problems?

Troubleshooting problems sending or receiving email and attachmentsVerify your internet connection is working. … Make sure you’re using the correct email server settings. … Confirm your password is working. … Confirm you don’t have a security conflict caused by your firewall or antivirus software.

How do you troubleshoot problems?

Basic troubleshooting techniquesWrite down your steps. Once you start troubleshooting, you may want to write down each step you take. … Take notes about error messages. If your computer gives you an error message, be sure to write down as much information as possible. … Always check the cables. … Restart the computer.

How do I fix my outgoing mail server?

Fix SMTP Server error in EmailOpen your email client program (Outlook Express, Outlook, Eudora or Windows Mail)Click “Accounts” in the “Tools” menu.Click on your email account then click “Properties” button.Click “General” tab.Ensure that the “E-mail address” is your valid address for this account.Click “Servers” tab.More items…

How do I find my internal SMTP server?

How to find the SMTP Mail Server for an Email AddressOpen a DOS Command Prompt.Type “nslookup”.Your computer’s DNS Server name and IP address will be displayed.Type “set type=mx” – This will cause NSLOOKUP to only return what are known as MX (Mail eXchange) records from the DNS servers.For an example, type “hotmail.com” or use your own domain name.More items…

Can receive email but Cannot send?

If you can receive emails but can not send emails this usually means the authenication required by the outgoing (SMTP) server is not configured. … ‘My outgoing (SMTP) server requires authentication’ is not checked. In Outlook it is in advanced settings.

Why do emails fail to send?

If you receive an error that a message is undeliverable, this could be due to the sending server trying to deliver the message but the action didn’t complete before the message expired. This error typically indicates a problem on the receiving server. Try these fixes: Make sure the recipient address is valid.