I have received a notification email from my server to my gmail account. Below is the detail: ================================================================= from Mail Delivery System <Mailer-Daemon@server.mydomain.com> to root@server.mydomain.com date Sun, Apr 17, 2011 at 8:16 PM subject: Warning: message 1QB3Mw-0000N8-Hn delayed 24 hours mailed-by server.mydomain.com This message was created automatically by mail delivery software. A message that you sent has not yet been delivered to one or more of its recipients after more than 24 hours on the queue on server.mydomain.com. The message identifier is: 1QB3Mw-0000N8-Hn The subject of the message is: lfd on server.mydomain.com: Suspicious process running under user cpanel The date of the message is: Sat, 16 Apr 2011 05:08:50 -0600 The address to which the message has not yet been delivered is: mygmailaddress@gmail.com (generated from root@server.mydomain.com) Delay reason: SMTP error from remote mail server after end of data: host alt4.gmail-smtp-in.l.google.com [209.85.143.27]: 421-4.7.0 [My server IP xx.xx.xx.xxx 10] Our system has detected an unusual rate of 421-4.7.0 unsolicited mail originating from your IP address. To protect our 421-4.7.0 users from spam, mail sent from your IP address has been temporarily 421-4.7.0 blocked. Please visit http://www.google.com/mail/help/bulk_mail.html 421 4.7.0 to review our Bulk Email Senders Guidelines. n4si8394687wej.169 No action is required on your part. Delivery attempts will continue for some time, and this warning may be repeated at intervals if the message remains undelivered. Eventually the mail delivery software will give up, and when that happens, the message will be returned to you. ================================================================= Now gmail not receiving any email from my server. I have enter SPF record on my host server DNS zone and enable DomainKeys from cPanel > Email Authentication. But steal now mail not receiving gmail from my server. Is there anything essential to fix this problem? Or help me how can I fix it permanently?
I'm not spamming at all. The IP is shared and there has hosted approximately 50 domains under the IP. If every domain owner send email to gmail address from there domain, than a large amount of email going to gmail. So gmail can mark the IP as spamming IP. Now I need to fix it.
Actually I have no idea how many email going to Gmail server from my server. Can I check it from my server, if yes please give me instruction to check it?
You've answered your question. If you are using shared IP than your IP could be marked as spam due to some spam actions of another customers. You should go to another IP address I suppose