メール不具合トラブル相談センターます

メール送信できなくなった、など　ご対応いたします。

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.