Delivery Failure error 553

15 pts.
Tags:
Firewalls
ISP
We have recently switched to a new ISP and a new firewall. I am not able to send emails to one person. This is the error message, I am getting "Error transferring to cluster9.us.messagelabs.COM; SMTP Protocol Returned a Permanent Error 553 http://www.mail-abuse.com/enduserinfo.html" How can I resolve this?

Answer Wiki

Thanks. We'll let you know when a new response is added.

It seems that the server ip address is black-listed.

You need to contact you ISP to resolve this.

You can get more help by visiting the page mentioned in the bounce message.

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Also, ask the receiving organization to whitelist your domain/IP address.

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  • Cil
    Thank you. I have verified that we are one one black list. I've requested to be removed.
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