Web Designing Company Singapore, Web Hosting Company, Custom Software Applications, eCommerce websites

Web Designing Company Singapore, Web Hosting Company, Custom Software Applications, eCommerce websites

UNSOLICITED MAIL ORIGINATING FROM YOUR IP

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.