rDNS problems with yahoo
GMail is not really sensitive to metadata and on my website I have some problems and the HELO is set to yellow.me, but on yahoo, I have some troubles because you are not working like google to solve automatically rDNS troubles so basically. Google translates the yellow-design.me from context to IP to solve rDNS, you just refuse the emails. Which means if someone is not technically knowledgable enough he won't be able to send emails to clients.
It would be nice for you to solve these problems automatically like google.
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