exchange 2007 outgoing mail problem

Posted on 2007-07-23
Last Modified: 2013-11-30
using POP3 to download from isp and exchange 2007 is user to delivery  to recipients and When exchange 2007 is sending email, get following error, not with all, only some domains. (dynamic ip in use for smtp) 550 Your e-mail was rejected for policy reasons on this gateway. Reasons for rejection may be related to content such as obscene language, graphics, or spam-like characteristics (or) other reputation problems. For sender troubleshooting information, please go to Please note: if you are an end-user please contact your E-mail/Internet Service Provider for assistance.
Question by:imran786
    LVL 22

    Expert Comment

    looks like you turned on the spam agents and its hitting a filter you have applied or you have a transport rule filters on words etc...
    LVL 1

    Author Comment

    by:imran786 #554 5.7.1 Service unavailable; Client host [] blocked using; ##

    LVL 22

    Accepted Solution

    whoever is listed on spamhaus and then it getting blocked...... If they are legit then you need to contact them and they can work to get removed.

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