Undelivered Mail Returned to Sender

Hosting Support
1

I was testing webmail by sending an email to my Gmail account but it bounced back…
I’ve received an email on Roundcube Webmail stating this…

This is the mail system at host freemail.byetcluster.com.

I’m sorry to have to inform you that your message could not
be delivered to one or more recipients. It’s attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

            The mail system

[email protected]: host gmail-smtp-in.l.google.com[64.233.166.27]
said: 550-5.7.1 [185.27.134.22 7] Our system has detected that this message is 550-5.7.1 likely unsolicited mail. To reduce the amount of spam sent to Gmail, 550-5.7.1 this message has been blocked. Please visit 550-5.7.1 https://support.google.com/mail/?p=UnsolicitedMessageError 550 5.7.1 for more information. rx17si3944403wjb.210 - gsmtp (in reply to end of DATA command)
Reporting-MTA: dns; freemail.byetcluster.com
X-Postfix-Queue-ID: 01057130470D
X-Postfix-Sender: rfc822; [email protected]
Arrival-Date: Fri, 21 Oct 2016 15:36:22 -0400 (EDT)

Final-Recipient: rfc822; [email protected]
Original-Recipient: rfc822;[email protected]
Action: failed
Status: 5.7.1
Remote-MTA: dns; gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 550-5.7.1 [185.27.134.22 7] Our system has
detected that this message is 550-5.7.1 likely unsolicited mail. To reduce
the amount of spam sent to Gmail, 550-5.7.1 this message has been blocked.
Please visit 550-5.7.1
https://support.google.com/mail/?p=UnsolicitedMessageError 550 5.7.1 for
more information. rx17si3944403wjb.210 - gsmtp

2

Please note that due to spam abuse, the ability to send emails is somewhat restricted.

With PHP sendmail only registration signup emails from forums and similar messages from other popular scripts are delivered.
You cannot use it to send any mail for other activities such as mass mailing.

However, you can use a remote SMTP server such as Google for domains or Microsoft Live domains email accounts. They serve the same purpose.

3

but for that, i need to pay, right?
Google mail for companies…

4

There are many services out there that offer free email services like Zoho and SendBlue.

5

There are many companies out there that offer free email services like Zoho and SendBlue.