Hello,
Thanks for the reply
Just to clear, we are having double-opt-in mailing list, and it does not contain any bounce ids.
We have tried warming IP's in different manners, but output is same (ip in spam).
Actually we are focusing on the email headers these day, as rest everything is been tried. And we have following observation.
sometimes ip comes inbox if mailfrom and from address is different, and headers are different, but its not consistently inbox.
So please anybody having some good knowledge about headers, can help me in this matter.
Thanks
fecdirect