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550 message submission is for authorised users only!

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2 comments

  • cPRex Jurassic Moderator
    Hey there! Is this a normal email sent from the Webmail interface of a cPanel account, or is this message being sent from a different type of mail tool? If this is a standard Webmail message, can you check the Exim log at /var/log/exim_mainlog to see if thee are any additional details there?
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  • rbairwell
    Ok, antispamcloud.com is a domain name operated by N-Able on their mtaroutes.com btw). As @cPRex asked, how is the email being sent out from your server? According to N-Able the "550 message submission is for authorised users only" message should only be generated under the following conditions: I assume your mail client is sending out from your cPanel server (and you are not trying to send out via a Mail Assure system)? Can you try a service such as CheckTLS TestSender tool (or even RedSift's
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