Sending' reported error (0x800CCC69) : ' The server responded: 550 IP address 78.150.58.218 in XBL'

Although I am able to receive emails Outlook 2007 will not send emails and leaves this error message:  Sending' reported error (0x800CCC69) : '  The server responded: 550 IP address 78.150.58.218 in XBL'

Can anyone advise me as to why this is happening and how to put this right?

 

Question Info


Last updated November 30, 2018 Views 12,074 Applies to:
Answer

Thank you for your support. The problem has mysteriously resolved itself.  I will keep your advice in case I have the same problem in the future.

 

Many thanks

1 person was helped by this reply

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