Undelivered Mail Returned to Sender From MAILER-DAEMON@johnny.heliohost.org

[shopinstore11]

This is the mail system at host johnny.heliohost.org.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                
Action: failed
Status: 5.7.26
Remote-MTA: dns; gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 550-5.7.26 This mail has been blocked because the sender
    is unauthenticated. 550-5.7.26 Gmail requires all senders to authenticate
    with either SPF or DKIM. 550-5.7.26  550-5.7.26  Authentication results:
    550-5.7.26  DKIM = did not pass 550-5.7.26  SPF [lysandergroup.com] with
    ip: [65.19.141.67] = did not pass 550-5.7.26  550-5.7.26  For instructions
    on setting up authentication, go to 550 5.7.26
    https://support.google.com/mail/answer/81126#authentication
    cp21-20020a056a00349500b006f46b3c7369si7946085pfb.22 - gsmtp

From
To
Date	Today 14:51

This is just a test to confirm mail is working

Edited May 8 by shopinstore11
personal info

[Ookma-Kyi]

On 5/8/2024 at 11:02 AM, shopinstore11 said:

This is the mail system at host johnny.heliohost.org.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                
Action: failed
Status: 5.7.26
Remote-MTA: dns; gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 550-5.7.26 This mail has been blocked because the sender
    is unauthenticated. 550-5.7.26 Gmail requires all senders to authenticate
    with either SPF or DKIM. 550-5.7.26  550-5.7.26  Authentication results:
    550-5.7.26  DKIM = did not pass 550-5.7.26  SPF [lysandergroup.com] with
    ip: [65.19.141.67] = did not pass 550-5.7.26  550-5.7.26  For instructions
    on setting up authentication, go to 550 5.7.26
    https://support.google.com/mail/answer/81126#authentication
    cp21-20020a056a00349500b006f46b3c7369si7946085pfb.22 - gsmtp

From
To
Date	Today 14:51

This is just a test to confirm mail is working

You need to setup DKIM and SPF records on the domain registars end. If you are using CloudFlare, they have a wizard that can help you with getting it set up.