501  5.7.1 error

Posted on 2006-05-02
Last Modified: 2010-08-05
Just installed a new exchange 2003 server sp2 and am getting this error on only one XP machine and only to one particular e mail domain at teh moment:-

You do not have permission to send to this recipient.  For assistance, contact your system administrator.

<SERVER.xxxxxxx.local #5.7.1 smtp;501 5.7.1 DSL4 rDNS source IP detected - sender, please use your ISP's mail server>

xxxxxxxx   is the customer name.

All other 25 PC's are fine and this one is okay on all other e mail?

Question by:matthewtwynham
    LVL 104

    Assisted Solution

    There are a number of errors there.

    1. Your server is announcing itself as a domain ending in .local
    That isn't valid and will trip antispam filters.

    2. The message looks like it is indicating that your reverse DNS is wrong. So you will need to get that changed by your ISP.


    Author Comment

    How do I change the server to reflect the rather than the .local?
    LVL 104

    Expert Comment

    Did you look at the web page I posted above? It is all outlined on there.


    Author Comment

    Thanks Simon

    I did read the page, which suggested setting up reverse DNS and MX records.

    The MX records were already correct, after setting up teh reverse DNS we still had teh same problem.

    In teh end I had to set up a new SMTP connector,using teh ISP as a smart host and just use it for the specific domain that we were having problems with, my guess is that there will be more in the future, but time will tell.

    Many thanks for your suggestions.
    LVL 104

    Accepted Solution

    You can set all the reverse DNS records that you like - sometimes a remote domain just will not accept your connection for whatever reason. I have had clients on expensive leased lines with correctly registered IP addresses, reverse DNS etc, and there were still a hard core of a dozen domains which would not deliver correctly.
    As such, with all deployments that I now do, I have an SMTP Connector already configured, with a dummy domain, just waiting to have other problematic domains added to its list.


    Featured Post

    How to improve team productivity

    Quip adds documents, spreadsheets, and tasklists to your Slack experience
    - Elevate ideas to Quip docs
    - Share Quip docs in Slack
    - Get notified of changes to your docs
    - Available on iOS/Android/Desktop/Web
    - Online/Offline

    Join & Write a Comment

    Use these top 10 tips to master the art of email signature design. Create an email signature design that will easily wow recipients, promote your brand and highlight your professionalism.
    Disabling the Directory Sync Service Account in Office 365 will stop directory synchronization from working.
    The basic steps you have just learned will be implemented in this video. The basic steps are shown to configure an Exchange DAG in a live working Exchange Server Environment and manage the same (Exchange Server 2010 Software is used in a Windows Ser…
    To add imagery to an HTML email signature, you have two options available to you. You can either add a logo/image by embedding it directly into the signature or hosting it externally and linking to it. The vast majority of email clients display l…

    746 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    17 Experts available now in Live!

    Get 1:1 Help Now