The emails always land in Spam of the email providers like Gmail, Yahoo and Hotmail.
The authenticated result in source of the email is pass.
spf=pass (google.com: domain of email@example.com designates xxx.xxx.xxx.xxx as permitted sender) firstname.lastname@example.org;
dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=domain.com
The server is running from quite some time and has never involved in any Spaming or mass mailing. Neither the ip address in the black list. Mail-tester.com result shows 8.1 saing:
-1.985 PYZOR_CHECK Similar message reported on Pyzor (http://pyzor.org)
Please test a real content, test Newsletters will always be flagged by Pyzor
Adjust your message or request whitelisting (http://public.pyzor.org/whitelist/)
The List-Unsubscribe header is required if you send mass emails, it enables the user to easily unsubscribe from your mailing list.
Your message does not contain a List-Unsubscribe header
- Do I need to have any changes or add something in the headers ? If yes, how it can be done?
- What is the criteria of blacklisting of email from Gmail,Yahoo,Hotmail ? And how it can be improved ?