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Bounced Emails From All Recipients

Can someone please help me.


When I send emails from my email address I receive the following bounces from all recipients which use the domain I do not receive bounces from anyone else who I send emails to. My domain name is maintained by Dyn and is current. What is going on here? Optusnet seems to have 'black-listed' my email address!!




Mail Delivery System <>




to john.baxter

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:
    host []
    SMTP error from remote mail server after RCPT TO:<>:
    521 5.7.1 <>: Recipient address rejected:
    You are not allowed to send mail. Please see if you feel this is in error.

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Trusted Contributor
Trusted Contributor

Re: Bounced Emails From All Recipients

Optus aren't blocking your email specifically, they are rejecting email from your host because it has a poor reputation for spam. Looking at the details behind the IP is owned by NetRegistry and/or Web Central. So because your email host has a poor rep, Optus is blocking the entire service. 


Please refer this matter to your email provider and ask them to review why their server has such a poor rep for spam.

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