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We're using rackspace hosted emails for multiple domains.

We're having email rejected due to being listed on spam block lists

The IP address being listed is

Listing confirmed at

emails bounced back contain msgs like:-

host[] said: 550 5.7.0 550 Server

IP listed as abusive. See for more information.

Protection provided by MagicSpam 1.0.8-1.1 (in

reply to RCPT TO command)


said: 554 5.7.1 The message from (<removed>)

with the subject of (RE: removed.) matches a

profile the Internet community may consider spam. Please revise your

message before resending. (in reply to end of DATA command)

Does anyone know how to avoid this, eg using alternactive smtp addresses?

  • Hi bennyuk,

    That IP is tied to a relay, or outbound mail server, in our system. Many IPs can tie back to,  and this is dictated by our load balancer.  We are aware of the blacklist and are awaiting it's removal.

    In the meantime as a work around you can ask if the recipient can safelist the sender, sender's domain, or that IP.  What would also be helpful is if you create tickets with the bouncebacks so that we can add the ticket as an affected user on our internal tracking system.


    Alison Oster
    Technical Community Manager

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