Not delivered to the Gmail

Hi I have generated the email routing and configured SMTP from gmail to send as suggested in the forum. From my wordpress website, mails are usually sent, but not delivered to the @gmail. It blocks them. On the others, they are delivered fine. The message is this:


Mail Delivery System [email protected] a través de email.cloudflare.net 
09:58 (hace 1 hora)
para clientes

This is the mail system at host relay.mailchannels.net.

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

<[email protected]>: host gmail-smtp-in.l.google.com[74.125.142.27]
    said: 550-5.7.26 This message does not pass authentication checks (SPF and
    DKIM both 550-5.7.26 do not pass). SPF check for [artes-saludables.com]
    does not pass 550-5.7.26 with ip: [23.83.209.24].To best protect our users
    from spam, the 550-5.7.26 message has been blocked. Please visit 550-5.7.26
    https://support.google.com/mail/answer/81126#authentication for more 550
    5.7.26 information. t3-20020a056a0021c300b0053e2b615693si4720698pfj.106 -
    gsmtp (in reply to end of DATA command)

My DNS:

My SPF is: v=spf1 include:_spf.mx.Cloudflare.net include:_spf.google.com ~all

Which DKIM record should I add?

Hi, I have configured the routing and sending SMTP as suggested here: here
From my web submissions, I am getting these messages:

This is the mail system at host [relay.mailchannels.net](http://relay.mailchannels.net/).

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

<[[email protected]](mailto:[email protected])>: host [gmail-smtp-in.l.google.com](http://gmail-smtp-in.l.google.com/)[74.125.142.27]
said: 550-5.7.26 This message does not pass authentication checks (SPF and
DKIM both 550-5.7.26 do not pass). SPF check for [[artes-saludables.com](http://artes-saludables.com/)]
does not pass 550-5.7.26 with ip: [23.83.209.24].To best protect our users
from spam, the 550-5.7.26 message has been blocked. Please visit 550-5.7.26
https://support.google.com/mail/answer/81126#authentication for more 550
5.7.26 information. t3-20020a056a0021c300b0053e2b615693si4720698pfj.106 -
gsmtp (in reply to end of DATA command)

---------- Forwarded message ----------

You can select the google by default or other. May I suggest you to check the source for testing and verifying the same?:

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