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Trouble delivering emails to Messagelabs (Symantec) servers.

  • 1.  Trouble delivering emails to Messagelabs (Symantec) servers.

    Posted Nov 17, 2017 11:33 AM

    Hi,

    It was reported that emails sent to some clients weren't delivered on time, sometimes with a delay of a day after it was sent.

    ​I asked to support team of our mail server to check what could be happening and and was told that emails delivered to domains on messagelabs servers probably are being rejected.

    ​When trying to telnet port 25 to cluster6.eu.messagelabs.com ​for exemple, sometimes there's no response, same as other servers from messagelabs.com.

     

    There's no problem with IP using http://ipremoval.sms.symantec.com/​.

    Can you check with your servers if there's issues with our IP??

     

    Thanks

     



  • 2.  RE: Trouble delivering emails to Messagelabs (Symantec) servers.

    Posted Dec 13, 2017 08:17 AM

    Submit a sample of the email that's getting blocked to:

    investigation@review.symantec.com 

    http://www.symantec.com/docs/TECH82881