gmailに送受信できないのでレンタルサーバーの設定をしてほしい。
Hi. This is the qmail-send program at m35.coreserver.jp.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.
Remote host said: 550-5.7.26 This mail has been blocked because the sender is unauthenticated.
550-5.7.26 Gmail requires all senders to authenticate with either SPF or DKIM.
550-5.7.26
550-5.7.26 Authentication results:
550-5.7.26 DKIM = did not pass
550-5.7.26 SPF [medicalsports.net] with ip: [202.172.26.36] = did not pass
550-5.7.26
550-5.7.26 For instructions on setting up authentication, go to
550 5.7.26 https://support.google.com/mail/answer/81126#authentication bm5-20020a056a00320500b006eaab856030si8921639pfb.86 - gsmtp