Hi, In outlook I get the below error for any email address I try (please note I changed the email address to email@example.com for privacy reasons). Your message did not reach some or all of the intended recipients. Subject: test Sent: 15/12/2020 5:30 PM The following recipient(s) cannot be reached: 'firstname.lastname@example.org' on 15/12/2020 5:30 PM Server error: '550 5.7.1 <email@example.com>... Relaying denied. IP name lookup failed [18.104.22.168]' I then tested direct in Post Office I get the below error for any email address I try Failure sending message: Email address not valid. Please use an email address which looks like firstname.lastname@example.org I have gone through all settings in Outlook to ensure they are correct, and tested Post Office as I need to send an email from this account. Thank-you for any help you can provide.
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