mx.google.com rejected your message to the following email addresses:

Question

I am having trouble with sending messages via my outlook account

I am using the web version of the outlook and am using the Microsoft exchange

i, keep getting the following error.

mx.google.com rejected your message to the following email addresses:

Your message wasn't delivered because the recipient's email provider rejected it.

mx.google.com gave this error: This mail has been blocked because the sender is unauthenticated. Gmail requires all senders to authenticate with either SPF or DKIM. Authentication results: DKIM = did not pass SPF [xavierfitness.com] with ip: [2a01:111:f403:2c09::801] = did not pass For instructions on setting up authentication, go to https://support.google.com/mail/answer/81126#authentication l72-20020a63914b000000b005f7ff1338ecsi5842183pge.278 - gsmtp

Answer 1

Hi @chris chauke ,

It seems like your email was not delivered because it failed the authentication checks by Gmail. Gmail requires all senders to authenticate their emails using either SPF or DKIM ).

In this case, you’ll need to set up SPF and DKIM for your domain through your DNS provider to authenticate your emails. Here are the general steps:

1. SPF: Add a TXT record in your domain’s DNS settings with the value v=spf1 include:spf.protection.outlook.com -all. This tells email servers that only Outlook’s servers are authorized to send emails for your domain. See: Set up SPF to identify valid email sources for your Microsoft 365 domain
2. DKIM: You’ll need to enable DKIM in the Exchange admin center, then create two CNAME records in your domain’s DNS settings. The specific values for these records can be found in the Exchange admin center.

Please note that changes to DNS records might take up to 48 hours to propagate.

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