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How do I fix Error 553?

How do I fix Error 553?

Troubleshooting Error 553

  1. From the “Tools” menu, select “Account Settings”
  2. After selecting your email account from the list, click the “Change” button, and insert your server’s name into the form field marked “Outgoing mail server (SMTP)”.

What does error code 553 mean?

553 Recipient mailbox is not allowed. The error message indicates that you have sent an email to an invalid address at the recipient’s domain.

What is the SMTP server port?

What is an SMTP port? SMTP (Simple Mail Transfer Protocol) is the basic standard that mail servers use to send email to one another across the internet. SMTP is also used by applications such as Apple Mail or Outlook to upload emails to mail servers that then relay them to other mail servers.

How does SMTP authentication work?

SMTP Authentication is the mechanism by which the clients of an ISP identify themselves to the mail server through which they intend to send email. It is not possible for any person to send email via any mail server they choose; mail servers will only allow the sending of email by legitimate users.

Why are my BT emails not sending?

This error message means your email message could not be sent. To fix this you need to make a simple change to enable SMTP server authentication in the email client you’re using. SMTP stands for Simple Mail Transfer Protocol, which is a process that enables the sending of email.

How do I find the SMTP server for my email?

You can generally find your SMTP email server address in the account or settings section of your mail client. When you send an email, with SMTP host Gmail or AOL, the SMTP server processes your email, decides which server to send the message to, and relays the message to that server.

How do I find my SMTP host and port?


  1. Open up a command prompt (CMD.exe)
  2. Type nslookup and hit enter.
  3. Type set type=MX and hit enter.
  4. Type the domain name and hit enter, for example:
  5. The results will be a list of host names that are set up for SMTP.

How do I fix SMTP authentication error?

Methods To Resolve “SMTP Error 535 Authentication Failed” Message

  1. Firstly, you should log in to your control panel and check your current account status.
  2. Check the username and password provided to log in to your mail server.
  3. Block the IP addresses that are consistently trying to log in to your account.

How do I find my SMTP username and password?

How can I find out my SMTP User Name and SMTP Password?

  • Log in to your account in the Secure SMTP Control Panel.
  • From the top menu select ‘SMTP Accounts’.
  • Select the required SMTP account from the list, and click the ‘Edit’ button.
  • On the ‘Edit SMTP Account’ page you can change your SMTP User Name and SMTP password.

How do I fix BT Email problems?

BT Email: I can’t send or receive email

  1. Using webmail? Log out of your email account then log back in again. It sounds simple, but it really does work!
  2. Using an email program? If you’re having problems, try logging in to webmail. Send yourself a test email.
  3. Other tips: Check that email addresses are typed correctly.

Is BT updating its email settings?

Welcome to your brand-new email – it’s more reliable than ever and with all the security you’d expect from BT.

What’s my SMTP server address?

How do I reset my SMTP server?

How to reset your Authenticated SMTP password

  1. Choose the option Authenticated SMTP.
  2. You will see a page that confirms the SMTP server address, the username, and the date the password was last changed.
  3. Enter the new password in the two boxes, and click on Save to complete the process.

How do I authenticate my SMTP server?

How to configure SMTP authentication

  1. Right-click on the context menu of your e-mail account and click on “Settings”
  2. Navigate to “Outgoing server (SMTP)” select your mail server and click “Edit”
  3. Activate the option “Use username and password” and enter your e-mail address.
  4. Confirm the settings with “OK”

How do I find my SMTP settings?

Outlook for PC In Outlook, click File. Then navigate to Account Settings > Account Settings. On the Email tab, double-click on the account you want to connect to HubSpot. Below Server Information, you can find your incoming mail server (IMAP) and outgoing mail server (SMTP) names.

What has happened to BT Email?

Your email is changing We’re about to move you from BT Yahoo email to our new email service called BT Mail. You’ll keep the features you love and also get some new ones too. We’ll move all your emails and folders across to BT Mail automatically.

Why are My BT Internet emails not coming through?

Log onto your email account and go to the settings which are found by clicking on your username at the right hand side. Once there go to “Mail” > “Blocked Senders” and scroll down checking to see if your contacts email addresses are there and also if the gmail domain is there.

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