Error Code 550-5.7.26 all of a sudden though has worked for the last several years.

I have a merchant service account for clients monthly auto billing. We send out automatic email receipts to the clients from the merchant website and they receive emails that we say are from my zoho email info@ourcompanyemail.com (not our email) so clients can reply back to us with any issues. We have never had problems for the last several years doing this but now none of our clients are receiving their monthly email receipts.

We added DKIM & SPF records to our domain though GoDaddy and they are verified. Any other suggestions based on the email below?

This is the email I receive:

This is the mail system at host smtp1-chi.ops.safewebservices.com.

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.

The mail system

<scott@gmail.co>: host gmail-smtp-in.l.google.com[142.251.16.27] said:
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 [skinlogicmedspa.com] with
ip: [104.192.32.80] = did not pass 550-5.7.26 550-5.7.26 To mitigate this
issue, please visit Gmail's authentication guide 550-5.7.26 for
instructions on setting up authentication: 550 5.7.26
https://support.google.com/mail/answer/81126#authentication
ks8-20020a056214310800b0067ab6fd437dsi5238379qvb.228 - gsmtp (in reply to
end of DATA command)
Reporting-MTA: dns; smtp1-chi.ops.safewebservices.com
X-Postfix-Queue-ID: 9D03E41D
X-Postfix-Sender: rfc822; info@ourcompanyemail.com
Arrival-Date: Mon, 4 Dec 2023 22:30:40 +0000 (UTC)

Final-Recipient: rfc822; scott@gmail.com
Original-Recipient: rfc822;scots@gmail.com
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 [skinlogicmedspa.com] with
ip: [104.192.32.80] = did not pass 550-5.7.26 550-5.7.26 To mitigate this
issue, please visit Gmail's authentication guide 550-5.7.26 for
instructions on setting up authentication: 550 5.7.26
https://support.google.com/mail/answer/81126#authentication
ks8-20020a056214310800b0067ab6fd437dsi5238379qvb.228 - gsmtp

Return-Path: <info@ourcompanyemail.com >
X-Priority: 3
X-Mailer: Gateway Email System 1.0
Date: Mon, 04 Dec 2023 22:30:40 +0000
MIME-Version: 1.0
Reply-To: info@ourcompanyemail.com
From:info@ourcompanyemail.com
Message-ID: <ad41b349a4f8c2751758579ca7ddb083.1701729040.61.49423554@ourcompanyemail.com >
To: scott@gmail.com
Subject: OUR COMPANY Transaction Receipt
Content-Type: multipart/related; boundary="----=ALTERNATIVE_BOUNDRY"

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