Externally Sent Mail Problem

Posted on 2009-04-22
Last Modified: 2013-11-30
My company is having difficulty sending mail to one particular domain. Upon the users sending the mail, they get a message back stating the following:
You do not have permission to send to this recipient. For assistance, contact your system administrator 5.7.1 smtp;550 5.7.1>...Rejected - TRUSTmanager

The Rejected - TRUSTmanager explaination i have not come across before. The message is also being generated by by mail gateway server.



Can someone please shed some light on this?
Question by:biggiesmallzz
    LVL 2

    Accepted Solution

    It looks like the other company is using some sort of blacklist program that has you in its bad books.
    The is a page here about it, but I'm deducing because I dont speak the language used.

    Is it possible to contact someone at the other domain & have a chat to their IT people? That may be the quickest way to straighten this out.

    You could also try some blacklist checking sites on the web, such as:

    Put in your domain name or the IP of your email server & see if you are listed in the sites they check
    LVL 9

    Expert Comment

    Your Domain Name or IP Adderss is Blocked

    Author Comment


    I have checked my mailservers ip address against & and found that it had not been blacklisted on either site.

    Any other ideas?

    LVL 2

    Expert Comment

    Be aware they were the first two links that fell out of Google for me. There may be other lists you are on. At this point, the quickest solution may be to talk to the other domains techies. they will know what is blocking you & why.

    Author Closing Comment

    It turned out that the receiving mail server is using MIME SWEEPER of which TrustManager is a module. Once their I.S. reconfigured it, it was fine.

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