Maybe you configured your mail client with a wrong outgoing server name: have a look at our list of SMTP and POP providers to double check it, or contact the provider. Firewall or antivirus issues. Make sure that you have an exception rule for your SMTP service in your firewall, proxy service or antivirus settings.

Par ailleurs, How do I fix my outgoing mail server?

Cannot send emails: How to fix email sending issues

1. Check your internet connection. Yup. …
2. Check your SMTP server details. …
3. Verify all usernames and passwords. …
4. Check your SMTP server connection. …
5. Change your SMTP port. …
6. Control your antivirus or firewall settings.

Et, Why are my emails not sending and going to outbox?

Emails might get stuck in your Outbox for a number of reasons. Perhaps, you opened and closed the email while it was in your Outbox, instead of opening and then sending it. … To send the email, double-click it, and click Send. An email can also get stuck in the Outbox if it has a very large attachment.

de plus, Can receive but Cannot send emails Outlook?

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 are my emails not sending Outlook?

Sometimes, one of Outlook’s add-ins will crash and prevent your email messages from sending. To disable all add-ins, you can start Outlook in safe mode. If you can send email while Outlook is in safe mode, creating a new Outlook email profile should allow you to send email again.

Why are my emails not sending outlook?

Sometimes, one of Outlook’s add-ins will crash and prevent your email messages from sending. To disable all add-ins, you can start Outlook in safe mode. If you can send email while Outlook is in safe mode, creating a new Outlook email profile should allow you to send email again.

Why is my email receiving but not sending?

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.

Why do emails fail to send?

If you are having trouble sending emails, it’s usually because of incorrect SMTP server settings, or a firewall/antivirus blocking access. … Try sending an email, with your firewall, antivirus, or proxy (if you are using this software) disabled. 4. Make sure your Outgoing server settings are correct.

Can receive but not send emails on Iphone?

You might need a special password or you may need to request authorisation from your email provider to send and receive emails on your device. Check your email account settings with your email provider or system administrator to make sure they’re correct.

How do I fix Outlook not sending or receiving emails?

Fix Outlook.com email sync issues

1. Check your Junk Email folder. …
2. Clean out your inbox. …
3. Check your inbox filter and sort settings. …
4. Check the Other tab. …
5. Check your Blocked senders and Safe senders lists. …
6. Check your email rules. …
7. Check email forwarding. …
8. Check if your account is blocked.

How do I troubleshoot SMTP problems?

Solution

1. Check the SMTP server settings. SMTP server address—Check the host name or network address of the SMTP e-mail server. …
2. Check the SMTP authentication settings. Check whether the e-mail server requires authentication. …
3. Test SMTP settings by sending a test e-mail. If you are unable to send a test e-mail:

How do I check my SMTP server settings?

Click the « Servers » tab at the top of the Account Properties window. The fields under the « Outgoing SMTP Server » heading contain your SMTP server settings.

Why will my emails not send?

Whenever encountering a problem with an email account sending or receiving, the first step is to try accessing the account with a web browser, preferably one that doesn’t have extensions or add-ons installed. … (Your VPN may be running your connection through an IP address that is blocked by your mail server.

How do I enable SMTP in Outlook?

Click the button More Settings… in the lower right-hand corner. The Internet Email Settings box appears. Click on the tab Outgoing Server. Click the tick box “My outgoing server (SMTP) requires authentication”, and ensure that the circle-box “Use same settings as my incoming mail server” is selected.

Why do my Hotmail emails keep failing to send?

This error typically indicates a problem on the receiving server. Try these fixes: Make sure the recipient address is valid. Reduce the number of recipients in the message. If you received this error when sending a message using Outlook or another email app, try using Outlook.com to send the message instead.

How do I troubleshoot email problems?

Start with these suggestions.

1. Verify your internet connection is working. If it’s not, there are several things you can check to fix it.
2. Make sure you’re using the correct email server settings. …
3. Confirm your password is working. …
4. Confirm you don’t have a security conflict caused by your firewall or anti-virus software.

Why am I getting mail delivery failed returning message to sender?

1. You send an email to someone. … In both cases the most common reason for getting “Mail delivery failed: returning message to sender” bounce back emails from your website, is because the ISP you / your website is sending an email to believes your email to be spam inaccurately.

How do I fix email problems?

5 Steps to Fix Common Email Problems

1. Verify your email account password.
2. Verify your email account username.
3. Determine the email account type.
4. Check the email server connection settings.
5. Fix a misbehaving email program or app.

How do I fix my outgoing mail server on my iPhone?

How to fix being able to send, but not receive, emails on iOS:

1. Access your iPhone settings.
2. Tap on “Mail“ to access your mail settings.
3. Tap on “Accounts“.
4. Tap on the affected email account.
5. Tap on the email account again on the next screen.
6. Tap on “SMTP” in the OUTGOING MAIL SERVER section.

How do I fix my outgoing mail server on my iPad?

Scroll down to MAIL > CONTACTS > CALENDARS, and click on that:

1. Then click on the account you need to update the SMTP settings for. …
2. You will get to the EMAIL INFORMATION page for that account. …
3. CLICK on the OUTGOING SERVER.
4. Now you will see a list of OUTGOING SERVERS that have been configured on your iPhone or iPad.

What is a SMTP mail server?

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.

How do I find my SMTP server in Outlook?

Find your Exchange mailbox server settings

1. Sign in to your account using Outlook Web App. …
2. In Outlook Web App, on the toolbar, select Settings > Mail > POP and IMAP.
3. The POP3, IMAP4, and SMTP server name and other settings you may need to enter are listed on the POP and IMAP settings page.

How do I check SMTP issues?

Visit the forums at: Exchange Server, Exchange Online, or Exchange Online Protection.

1. Step 1: Install the Telnet Client on your computer. …
2. Step 2: Find the FQDN or IP address of the destination SMTP server. …
3. Step 3: Use Telnet on Port 25 to test SMTP communication. …
4. Step 4: Success and error messages in the Telnet Session.

How do I enable SMTP logging?

a. Enable SMTP Logs

Open Start > Programs > Administrative Tools > Internet Information Service (IIS) Manager. Right click « Default SMTP Virtual Server » and choose « Properties ». Check « Enable logging ».

How do I know if my SMTP server is working?

Web-Based Solutions

1. Navigate your Web browser to the mxtoolbox.com diagnostic page (see Resources).
2. In the Mail Server text box, enter the name of your SMTP server. …
3. Check the working messages returned from the server.