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I have a VPS LAMP server using Ubuntu with I'm using postfix as the MTA to do mailout. All my emails, when sent to Yahoo, are flagged as spam.

I want to implement reverse dns to see if it will resolve this issue. Can someone recommend me a guide for this purpose?

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marked as duplicate by masegaloeh, Ward, MadHatter, Jenny D, womble Sep 24 '15 at 4:11

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

has this case been solved? I'm on linode as well and having the same problem. All my email is in spam, even when reverse DNS and SPF has been set up – solsol Nov 12 '10 at 10:08
up vote 1 down vote accepted

According to the Linode documentation, you can configure reverse DNS records using Linode Manager.

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Whoever owns your IP address (your VPS host) will have to setup the reverse DNS for you (they own the IP). Call their tech support - they may provide some tool for this, or they might need to do it manually.

It is a public IP that's yours alone, right?

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