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zhangchi2009's avatar
zhangchi2009
Copper Contributor
Jul 30, 2020

exchange 2019 ipblocklistprovider block e-mail even not in blocklist

hello guys ,

 

i'm facing a prblem on exchange 2019 CU3 .

 

i set the ipblocklistprovider as zen.spamhaus.org to prevent spam e-mails , but some e-mails from our costomer were blocked  .  i have checked the agent log ,and i can see the log which e-mails were blocked by zen.spamhaus.org .

 

1. i use test-ipblocklistprovider command to test the ipaddress of our customer , but the DNS lookup result from zen.spamhaus.org is "false"

 

2.  i try to add this ip address of our customer into ipallowlistentry , but no use , the e-mail still blocked .

 

does anyone can help on this ？

 

thank you very much .

 

 

Exchange Server

2 Replies

  • Marco Antonio da Silva's avatar
    Marco Antonio da Silva
    Copper Contributor
    Aug 04, 2020

    Hello zhangchi2009 

     

    I recommend that you review the https://practical365.com/exchange-server/add-ip-block-list-provider-exchange-server-2013-edge-transport/

     

    Check also if there incorrect dns report.

    • zhangchi2009's avatar
      zhangchi2009
      Copper Contributor
      Aug 04, 2020

      helloMarco Antonio da Silva

       

      thank you for your reply .

       

      i think the anti-spam function is working now because i can see lots of spam e-mails were blocked .

       

      the problem is some e-mails from our customer's were blocked but i want to add them into the whitelist . 

       

      the way i tried to is to add the ip address into IpAllowListEntry , but no use , the e-mails still blocked .

       

      so i'm looking for someone can help on this .

       

      thank you very much .

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