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  • 1.  Mail delivery failed: returning message to sender

    Posted Dec 05, 2016 05:33 PM

    Hello , 

    How may I solve the following problem (bounce message) when sending an email: 

     

       " host cluster4.us.messagelabs.com [216.82.242.33]

        SMTP error from remote mail server after initial connection:

        501 Connection rejected by policy [7.7] 5504, please visit

    www.messagelabs.com/support for more details about this error message."

     

    Right now I have 4 customers with this issue. 

    It is possible for you  to reset the reputation for IPs 198.38.82.140 and 198.38.82.168.

     


  • 2.  RE: Mail delivery failed: returning message to sender

    Posted Dec 06, 2016 03:25 AM

    Hi Andres,

    I will look into this for you now and will update you asap.

    King regards

    Kevin Brosnan

    Tier 2 Senior Technical Support Engineer



  • 3.  RE: Mail delivery failed: returning message to sender
    Best Answer

    Posted Dec 06, 2016 04:20 AM

    Hi Andres,

    I can now confirm that both IPs 198.38.82.140 and 198.38.82.168. are not listed on our internal Blacklist and I have also reset the confidence of both IP's accross all our towers.

    This has now fixed the issue and you will no longer get issues sending emails from those IP's to our customers.

    Please set this thread as resolved.

    Kind regards

    Kevin Brosnan

    Tier 2 Senior Technical Support Engineer