たとえば 下記のようなエラーで送信できないなど
是非ご相談くださいませ。
<＊＊＊＊＊>: host gmail-smtp-in.l.google.com[＊＊＊＊＊] said:
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 ＊＊＊＊＊] did not
pass 550-5.7.26 with ip: [＊＊＊＊＊]. The sender should visit
550-5.7.26 https://＊＊＊＊＊/mail/answer/81126#authentication for
550 5.7.26 instructions on setting up authentication.
メールエラー時の
エラーメッセージを
お教えくださいませ。
