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UNSOLICITED MAIL ORIGINATING FROM YOUR IP

- Posted in 31 January 2020 Servers by

Reasons for unsolicited mail originating from your IP address

gmail  unsolicited mail originating from your IP

421-4.7.0 unsolicited mail originating from your IP address. To protect ourn421-4.7.0users from spam, mail sent from your IP address has been temporarily 21-4.7.0 rate limited. Please visit http://www.google.com/mail/help/bulk_mail.n421 4.7.0 html to review our Bulk Email Senders Guidelines. l41si55243084eef.158 - gsmtp
  1. Reason#1 Email spammers using your domain to send a lot of spam emails to other users mainly Gmail accounts.
  2. Reason#2 Your computer compromised & some vulnerable scripts using your outlook/thunderbird email clients to send emails on background..
  3. Reason#3 Poor email practices among your internal users, like unusual email forwarding to many other users mainly Gmail accounts can cause email blacklist.

Reason#1 If your domain is using Gsuit for sending emails, make sure your SPF record has includes this entry..

"v=spf1 +a include:_spf.google.com +all"

Any email receiving servers, 1st checking your emails whether it is authenticated email. Your DNS records must have proper MX/SPF records and so..

Reason#2

MX Records
DKIM
SPF Records (TXT records)
DMARC Policy
PTR records

Reason#3 Don’t trust your hosting provider's free email servers. Shared free email servers are really the 1st culprit for any email spam issues.

Reason#4 In addition to email authentication, I recommend your server must have a valid hostname and PTR (reverse DNS) record. Also, make sure DMARC policy, atleast set it to ' none'.

Many web hosts break DKIM because they use smarthost relays that do not sign messages properly. I have seen other hosts and DNS providers break DKIM by inserting line breaks or truncating the TXT records.

Still got email issues ? Contact a best web hosting company for help.