Hotmail is one of the best of free email service. This feature-rich and user-friendly email service from the house of Microsoft is used for both personal and business communication. While sending mail through Hotmail, many users face error 550. This is a common Hotmail server error. The outgoing server maintains the original SMPT protocol and if you are facing error 550, the outgoing server cannot connect to the server and is not able to respond to your mail-sending request.

You can easily fix Hotmail error 550. With the help of following steps:

  • Steps to Resolve Hotmail Error 550
  • Open your Hotmail account from computer.
  • In your account, you will find the Tools tab.
  • Under the Tools tab, there is an account. Click on it.
  • After selecting the account; you have to click on Email Server Settings
  • Now go to SMTP and make sure the server name is
  • After that go to More Settings
  • Click on Outgoing Server
  • Check on option My server requires authentication
  • Now save the settings and Tab. turn off

If you are still getting error "550" in Hotmail then you can try to enable SMTP authentication. If you are using the Hotmail email client, and you do not have SMTP authentication; so there is a high chance of your email being classified as spam. And your spam score refuses to send email from your Hotmail account and shows you error 550. You need to follow the instructions to enable SMTP authentication.

Before sending an email you need to evaluate its content. Hotmail's outgoing servers are using Spam Evolution software that scans and tracks the contents of emails. Spam scanner set to the most generous level will block emails with high spam scores. This will evaluate both the title and body of the email. Do not use popular spamming words like prize, lottery etc. If there is a suspicious word, retype the message in the body and then try to send it.

If this problem persists then the "Internet Service Provider" is blocking "port 25" of the outgoing mail server. You can use an email server instead of using your own. You can also switch port 587 if you don't want to use your ISP server for SMTP. If your Hotmail account is still showing error 550 message, you can dial our toll-free Hotmail Customer Support Phone Number and share your problem with experts.