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  • 1.  Connection to cluster3.eu.messagelabs.com timed out

    Posted May 17, 2017 04:41 AM

    Hello,

    one of our mailservers is currently unable to connect to cluster3.eu.messagelabs.com which prevents us from sending vital Information to our partners.

    Could you please review and whitelist 87.118.100.220

    nc cluster3.eu.messagelabs.com 25
cluster3.eu.messagelabs.com [85.158.137.83] 25 (smtp) : Connection timed out

    I have checked the blacklist and could not find any entries for that IP.

    I'd appreciate a quick response and solution.

     

    Best regards,

    Alex

     



  • 2.  RE: Connection to cluster3.eu.messagelabs.com timed out

    Posted May 17, 2017 07:38 AM

    Here's some additional info:

    Sometimes I get lucky and get a working server from the pool:

    lucky working examples:

    nc cluster3.eu.messagelabs.com 25
    220 server-9.tower-123.messagelabs.com ESMTP

     

    nc cluster3.eu.messagelabs.com 25
    220 server-16.tower-90.messagelabs.com ESMTP

    nc cluster3.eu.messagelabs.com 25
    220 server-4.tower-90.messagelabs.com ESMTP

    nc cluster3.eu.messagelabs.com 25
    220 server-8.tower-125.messagelabs.com ESMTP

     

    Best regards,

    Alex

     



  • 3.  RE: Connection to cluster3.eu.messagelabs.com timed out
    Best Answer

    Posted May 18, 2017 02:26 AM

    Hi Alex,

    I can now confirm that I have now reset the confidence of that IP accross all our towers and we will not longer drop your connections from that IP.


    This will fix the issue and you will no longer get issues sending emails from that IP to our customer

    Please set this thread as resolved to prevent other people adding to it.


    Kind regards

    Kevin Brosnan

    Tier 2 Senior Technical Support Engineer



  • 4.  RE: Connection to cluster3.eu.messagelabs.com timed out

    Posted Jun 01, 2017 03:45 AM
    The IP address you submitted, 87.118.100.220, does not have a negative reputation and therefore cannot be submitted for investigation.

     

    Hello Kevin,

    we're seeing the same issue again. Connections are being either dropped or refused. Could you please check again? We're unable to send booking mails.

    Best regards,

    Alex