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  • 1.  421 Service Temporarily Unavailable issue from domain modianotv.com (62.38.205.225)

    Posted May 11, 2017 06:42 PM

    Hello,

    I am the administrator of modianotv.com mail server running behind a public ip of 62.38.205.225

    Recently two of our major customers failed to receive our company emails.

    They are both using messagelabs.com services.

    After looking at the SMTP server log files, we came accross the issue of 

    216.82.251.230 OutboundConnectionResponse SMTPSVC1 OLYMPOS - 25 - - 421+Service+Temporarily+Unavailable 0 0 35 0 1219 SMTP

    Please advice what can be the source of such an issue and if there was a penalty at this IP, please remove it from your databases.

    thanks in advance

    Dimitris Tsichles



  • 2.  RE: 421 Service Temporarily Unavailable issue from domain modianotv.com (62.38.205.225)

    Posted May 12, 2017 11:09 AM

    Hi Dimitris,

    I have investigated this issue and found that the confidence of that IP was low and we were blocking connections as a result.

    I have now reset the confidence to high across our entire network and we will no longer block email connections from that IP.

    Please can you set this thread as resolved to prevent others from adding to it.

    Kind regards

    Kevin Brosnan

    Tier 2 Senior Technical Support Engineer



  • 3.  RE: 421 Service Temporarily Unavailable issue from domain modianotv.com (62.38.205.225)

    Posted May 18, 2017 03:14 AM

    Hi Dimitris,

    Just following up on this and wondered if you require any further information.

    If not please can you set this thread as resolved to prevent others adding to it.

    Kind regards

    Kevin Brosnan
    Tier 2 Senior Technical Support Engineer
    CompTIA Security+ Certified