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Second option is to replace a lost key pair on an EC2 instance as long as it's an EBS backed instance. The following link may help: replace-lost-keypair


Okay, so you're saying that your mail exchange server is doing a reverse DNS check and rejecting the email because that fails, right? I recently had a problem where I was sending emails out via PHP and sendmail and the emails were going in the spambox due to reverse DNS failure as well. For me, the solution was setting a SPF (Sender Policy Framework) record ...

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