Unable to send to Gmail (think it may also be other addresses as well)

tatesmarket.com

    host gmail-smtp-in.l.google.com [142.250.102.26]

    SMTP error from remote mail server after pipelined end of data:

    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 [tatesmarket.com] did not

    550-5.7.26 pass with ip: [66.96.185.7]. 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. d23-20020a17090694d700b0099b5c6c643fsi10409982ejy.316 - gsmtp