sending to Gmail accounts through apple mail

We could not deliver your message as the email provider of the person you were trying to send to has rejected it. If you have tried to send to multiple people, we have listed the people who did not get the message below and the reason.

Your message was rejected by gmail-smtp-in.l.google.com for the following reason:

    5.7.26 This mail is unauthenticated, which poses a security risk to the

    5.7.26 sender and Gmail users, and has been blocked. The sender must

    5.7.26 authenticate with at least one of SPF or DKIM. For this message,

    5.7.26 DKIM checks did not pass and SPF check for [gingram.com] did not

    5.7.26 pass with ip: [213.120.69.17]. The sender should visit

    5.7.26 https://support.google.com/mail/answer/81126#authentication for

    5.7.26 instructions on setting up authentication. p30-20020a05600c1d9e00b003fea723ed60si3503012wms.205 - gsmtp

The following recipients did not receive this message:

Reporting-MTA: dns; sa-prd-fep-041.btmx-prd.synchronoss.net

Arrival-Date: Fri, 1 Sep 2023 19:35:19 +0100

Received-From-MTA: dns; sa-prd-rgout-001.btmx-prd.synchronoss.net (10.2.38.4)

Final-Recipient: RFC822; <gingram6006@gmail.com>

Action: failed

Status: 5.1.1

Remote-MTA: dns; gmail-smtp-in.l.google.com (173.194.76.26)

Diagnostic-Code: smtp; 550-5.7.26 This mail is unauthenticated, which poses a security risk to the

550-5.7.26 sender and Gmail users, and has been blocked. The sender must

550-5.7.26 authenticate with at least one of SPF or DKIM. For this message,

550-5.7.26 DKIM checks did not pass and SPF check for [gingram.com] did not

550-5.7.26 pass with ip: [213.120.69.17]. The sender should visit

550-5.7.26 https://support.google.com/mail/answer/81126#authentication for

550 5.7.26 instructions on setting up authentication. p30-20020a05600c1d9e00b003fea723ed60si3503012wms.205 - gsmtp

Subject: test666

Date: 1 September 2023 at 19:35:08 BST

To: gingram6006

cheers

Gary

[Edited by Moderator]