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I'm having problems with email and getting an error message, what should I do? | BT Business

I'm having problems with email and getting an error message, what should I do?

Here are some of the common email error messages you might see and how to fix them:

Error 550 Message rejected due to sender IP reputation

There are several possible reasons for this:

  • Your email is being identified as spam
  • If you're getting the message: 550 Message rejected due to sender IP reputation ([86.xx.xx.xx]) this might be because your email is being rejected as spam by the BT network

This might be happening because:

  • your emails are bigger than our maximum size limits
  • you're sending emails to people who haven't opted to receive them

If you're using your own email server, make sure it is not set to Open relay.

Change your email password and run a full virus scan on all devices that access the email. If this doesn't work, contact us to check to see if you are on a bad sender list.

Error 0x80042109 - I can receive but not send emails

The most common cause of this error message is a problem with connecting to the internet and account settings configured incorrectly in Outlook. First, make sure that you are connected to the internet. If your email is with us, check your server settings are as below:

POP setting

  • Server name:
  • Port: 995
  • Encryption method: SSL

SMTP setting

  • Server name:
  • Port: 587
  • Encryption method: SSL/TLS

More information can be found on the Microsoft website.

Error 0x800CCC0E - Cannot connect to server

Your mail client is unable to connect to your mail server.

Assuming that your connection to the internet appears to be working fine, you should first check the service status in your area to see if there are any intermittent outages or problems with the email service.

If there are general problems with the network in your area, this may be preventing you from being able to use our services as normal.

If there are no reported problems with the service status in your area then the most likely culprit is the set-up of the account details in your email client. If your email is with us check your set-up.

If you still need help and want to call or chat online please contact us.

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