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Email being blocked by Recipient Mail Server (553-Message filtered).

  • 1.  Email being blocked by Recipient Mail Server (553-Message filtered).

    Posted Mar 03, 2020 07:47 AM

    The last couple of days I have had users attempting to send emails to particular domains that are being filtered by messagelabs.

    We are regularly reciving immediate bounces with the following error code:

    cluster4.us.messagelabs.com #5.0.0 smtp; 553-Message filtered. Refer to the Troubleshooting page at 553-http://www.symanteccloud.com/troubleshooting for more 553 information. (#5.7.1)